| USA LONGEST CAVES Compiled by: Bob Gulden - June 09, 2009 | |||||||||
| Caves Mapped/Surveyed at 1 mile+ in length (5280 feet, 1609 meters) | |||||||||
| Send updates and corrections to caverbob@aol.com | |||||||||
| The NSS Geo2 Long & Deep Caves Web Site is at http://www.caverbob.com Copyright 2009 NSS Geo2, Bob Gulden NSS#13188LF | |||||||||
| Do not ask for cave locations, I will not give them out. | |||||||||
| LENGTH | LENGTH | DEPTH | DEPTH | ||||||
| # | CAVE NAME | STATE | COUNTY | MILES | METERS | FEET | METERS | SOURCE | DATE |
| 1 | Mammoth Cave System (N.P.) | Kentucky | Ed./Hart/Bar. | 367.000 | 590629 | 379 | 115.5 | CRF / CKKC | 5/5 |
| 2 | Jewel Cave (N.M.) | South Dakota | Custer | 144.830 | 233081 | 632 | 192.6 | http://www.nps.gov/jeca | 1/9 |
| 3 | Wind Cave (N.P.) | South Dakota | Custer | 132.050 | 212514 | 646 | 196.9 | Rod Horrocks e-mail | 4/9 |
| 4 | Lechuguilla Cave (C.C.N.P.) | New Mexico | Eddy | 126.540 | 203646 | 1604 | 488.9 | Stan Allison e-mail | 4/9 |
| 5 | Fisher Ridge Cave System | Kentucky | Hart | 111.863 | 180026 | 356 | 108.5 | www.fisher-ridge.net | 12/8 |
| 6 | Friars Hole Cave System | West Virginia | Green./Pocoho. | 45.539 | 73288 | 628 | 191.4 | Doug Medville | 05/03 |
| 7 | Kazumura Cave (Lava Tube) | Hawaii | Hawaii | 40.700 | 65500 | 3614 | 1101.5 | HSS Newsletter N9P7 | 06/01 |
| 8 | Organ Cave System | West Virginia | Greenbrier | 38.452 | 61882 | 486 | 148.1 | WVASS Database | 5/7 |
| 9 | Whigpistle System | Kentucky | Edmonson | 34.270 | 55152 | 314 | 95.7 | Joel Despain e-mail | 12/8 |
| 10 | Blue Spring Cave (Saltpeter) | Tennessee | White | 33.834 | 54451 | 233 | 71.0 | Mike Rogers e-mail | 3/9 |
| 11 | Scott Hollow Cave | West Virginia | Monroe | 29.500 | 47476 | 571 | 174.0 | WVASS Spring Meeting | 5/9 |
| 12 | Hellhole | West Virginia | Pendleton | 28.280 | 45512 | 519 | 158.2 | Gordon Brace e-mail GVKS | 9/7 |
| 13 | Wakulla-Leon Sinks Cave System (Under Water) | Florida | Leon/Wakulla | 28.260 | 51081 | 350 | 106.7 | Caves and Karst of Florida, 2008 NSS Convention | 7/8 |
| 14 | Crevice Cave | Missouri | Perry | 28.201 | 45385 | 0 | 0 | M.S.S. Hauck | 02/04 |
| 15 | Cumberland Caverns (Saltpeter) | Tennessee | Warren | 27.616 | 44444 | 200 | 61.0 | Charles Cole | 03/92 |
| 16 | Carlsbad Cavern (C.C.N.P.) | New Mexico | Eddy | 27.530 | 44305 | 1035 | 315.5 | Stan Allison e-mail | 2/8 |
| 17 | Omega System | Virginia | Wise | 25.090 | 40378 | 1263 | 385.0 | Benjamin Schwartz e-mail | 8/8 |
| 18 | Sloans Valley Cave System | Kentucky | Pulaski | 24.640 | 39654 | 240 | 73.2 | The International Caver N19P23 | 05/97 |
| 19 | Xanadu Cave System | Tennessee | Fentress | 23.799 | 38301 | 230 | 70.1 | Tenn.Cave Survey | 02/03 |
| 20 | The Hole (Boggs Cave) | West Virginia | Greenbrier | 23.003 | 37020 | 225 | 68.6 | Bill Balfour | 09/91 |
| 21 | Binkley's Cave System | Indiana | Harrison | 22.794 | 36683 | 140 | 42.7 | Gary Roberson e-mail | 6/9 |
| 22 | Coral Cave System | Kentucky | Pulaski | 22.560 | 36307 | 340 | 103.6 | Lee Florea e-mail | 12/02 |
| 23 | Sugar Run Cave System | Virginia | Giles | 22.500 | 36210 | 718 | 218.8 | VSS Long & Deep Cave Lists | 02/03 |
| 24 | Hidden River System (Hicks Cave) | Kentucky | Hart | 21.100 | 33957 | 160 | 48.8 | Carbide Caver V7I10P111 | 10/98 |
| 25 | Lost River Cave System | Indiana | Orange | 21.009 | 33811 | 94 | 28.7 | Mark Deebel e-mail | 10/8 |
| 26 | Lilburn Cave (N.P.) | California | Tulare | 20.810 | 33490 | 508 | 154.8 | Jed Mosenfelder e-mail | 1/6 |
| 27 | Blue Spring Cave | Indiana | Lawrence | 20.810 | 33490 | 140 | 42.7 | Art Palmer e-mail | 04/02 |
| 28 | Chestnut Ridge Cave System | Virginia | Bath | 20.110 | 32364 | 804 | 245.1 | Phil Lucas e-mail | 7/7 |
| 29 | Honey Creek Cave | Texas | Comal | 20.027 | 32231 | 124 | 37.8 | NSS News V66N7P28 | 7/8 |
| 30 | Culverson Creek Cave System | West Virginia | Greenbrier | 19.750 | 31785 | 329 | 100.3 | WVASS Database | 5/7 |
| 31 | Moore Cave System (Berome & Tom) | Missouri | Perry | 18.000 | 28968 | 0 | 0 | NSS Caves Files - Dick Blenz | 10/5 |
| 32 | Windy Mouth (Wind) Cave | West Virginia | Greenbrier | 18.000 | 28968 | 0 | 0.0 | Jim Hixson | 02/89 |
| 33 | Fitton (Beauty) Cave | Arkansas | Newton | 17.500 | 28164 | 0 | 0.0 | Scott House e-mail | 02/04 |
| 34 | Hualalai Ranch Cave (Lava Tube) | Hawaii | Hawaii | 17.265 | 27785 | 1449 | 441.7 | Doug Medville e-mail | 3/7 |
| 35 | Thornhill Cave System | Kentucky | Breckenridge | 17.232 | 27732 | 0 | 0.0 | Arron Reed Louisville Grotto e-mail | 11/01 |
| 36 | Coldwater Cave | Iowa | Winneshiek | 17.005 | 27367 | 80 | 24.4 | Larry Welch e-mail | 07/03 |
| 37 | Kipuka Kanohina (Kula Kai Caverns) (Lava Tube) | Hawaii | Hawaii | 16.500 | 26554 | 762 | 232.3 | Bob Richards e-mail | 11/4 |
| 38 | McClung Cave System | West Virginia | Greenbrier | 16.400 | 26393 | 200 | 61.0 | WVACS | 10/82 |
| 39 | Butler-Sinking Creek System | Virginia | Bath | 16.010 | 25766 | 624 | 190.2 | VSS Long Cave List | 02/03 |
| 40 | Rumbling Falls Cave. | Tennessee | Van Buren | 16.000 | 25750 | 474 | 144.5 | Marion O.Smith per TCS | 02/03 |
| 41 | Carroll Cave | Missouri | Camden | 15.901 | 25590 | 106 | 32 | Bob Lerch e-mail | 1/8 |
| 42 | Mystery Cave System | Missouri | Perry | 15.842 | 25495 | 0 | 0 | M.S.S. Walsh | 02/04 |
| 43 | Fern Cave (597) | Alabama | Jackson | 15.630 | 25154 | 536 | 163.4 | Fern Cave Project | 1995 |
| 44 | Mountain Eye Cave System (Saltpeter) | Tennessee | Fentress | 15.587 | 25085 | 300 | 91.4 | Tenn. Cave Survey | 03/87 |
| 45 | Nunley Mtn.Cave System (Maria Angela Grotto) | Tennessee | Grundy | 15.152 | 24385 | 350 | 106.7 | David Parr per TCS | 02/03 |
| 46 | Cave Creek Cave System | Kentucky | Pulaski | 15.010 | 24156 | 170 | 51.8 | COG Squeaks | 1977 |
| 47 | Foglepole Cave | Illinois | Monroe | 15.000 | 24140 | 0 | 0.0 | NSS News V56N4P114 | 04/98 |
| 48 | Benedicts (Persinger) Cave | West Virginia | Greenbrier | 14.746 | 23732 | 254 | 77.4 | Bill Douty e-mail | 4/9 |
| 49 | Big Horn - Horsethief Cave System | Wyoming / Montana | Bighorn | 14.615 | 23521 | 171 | 52.1 | Even Gehring e-mail | 02/04 |
| 50 | Gap Cave System (Cudjo's) (C.G.N.H.P.) | Virginia | Lee | 14.545 | 23408 | 484 | 147.5 | Bob Gulden (CRF) | 3/9 |
| 51 | Fort Stanton Cave | New Mexico | Lincoln | 14.400 | 23175 | 170 | 51.8 | Lee H.Skinner e-mail | 5/9 |
| 52 | Rimstone River Cave | Missouri | Perry | 14.200 | 22853 | 0 | 0 | M.S.S. Walsh | 02/04 |
| 53 | Powell's Cave System | Texas | Menard | 14.199 | 22851 | 75 | 22.9 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 54 | Bone - Norman Cave System | West Virginia | Greenbrier | 14.118 | 22721 | 186 | 56.7 | Bill Douty e-mail | 12/97 |
| 55 | Memorial Day Cave | West Virginia | Pendleton | 13.050 | 21002 | 457 | 139.3 | GVKS - Peter Penczer | 1/9 |
| 56 | Emesine Cave (1881 System) (Lava Tube) | Hawaii | Hawaii | 12.890 | 20744 | 1433 | 436.8 | Don Coons e-mail | 03/02 |
| 57 | Mystery Cave System | Minnesota | Fillmore | 12.790 | 20584 | 101 | 30.8 | Minnesota Speleology | 08/87 |
| 58 | Big Bat Cave | Kentucky | Breckenridge | 12.680 | 20406 | 0 | 0.0 | List of Mapped Caves of Kentucky | 01/86 |
| 59 | Anvil Cave (279) | Alabama | Morgan | 12.667 | 20386 | 51 | 15.5 | Alabama Cave Survey | 04/80 |
| 60 | Gradys (Mammoth River) Cave System | Kentucky | Hart | 12.600 | 20278 | 120 | 36.6 | Carbide Caver V7I9P111 | 10/98 |
| 61 | Bigfoot Cave | California | Siskiyou | 12.400 | 19956 | 1205 | 367.3 | Steve Knutson | 12/90 |
| 62 | Ellisons Cave | Georgia | Walker | 12.127 | 19517 | 1063 | 324.0 | Georgia Underground V24N1 | 03/87 |
| 63 | Wells Cave | Kentucky | Pulaski | 11.496 | 18501 | 0 | 0.0 | NSS News V57N10P308 | 10/99 |
| 64 | Goochland - Poplar Cave Complex | Kentucky | Rockcastle | 11.180 | 17992 | 0 | 0.0 | Kentucky Speleo-Fest Guidebook | 1981 |
| 65 | Groaning Cave | Colorado | Garfield | 11.154 | 17951 | 149 | 45.4 | Stuart Marlatt e-mail | 04/03 |
| 66 | Crumps Spring Cave | Kentucky | Hart | 10.740 | 17284 | 140 | 42.7 | Joe Saunders | 09/89 |
| 67 | Portal-BoarHole System | West Virginia | Greenbrier | 10.400 | 16737 | 333 | 101.5 | WVASS Database | 5/7 |
| 68 | James (Thousand Domes) Cave | Kentucky | Edmonson | 10.250 | 16496 | 0 | 0.0 | Glenn Merrill | 07/84 |
| 69 | Perkins Cave | Virginia | Washington | 9.997 | 16089 | 300 | 91.4 | Virginia Speleological Survey | 1987 |
| 70 | Pahoa Cave(s) (segmentation??) (Lava Tube) | Hawaii | Hawaii | 9.942 | 16000 | 1150 | 350.5 | Lava Tube Flow e-mails | 5/5 |
| 71 | Sullivan Cave | Indiana | Lawrence | 9.632 | 15501 | 105 | 32.0 | Sam Frushour , NSS Convention | 1973 |
| 72 | Big Bone Cave (Saltpeter) | Tennessee | Van Buren | 9.627 | 15493 | 226 | 68.9 | John Smyre | 06/84 |
| 73 | Maxwellton (Cowshit Pit) Cave | West Virginia | Greenbrier | 9.627 | 15493 | 126.2 | 38.5 | WVASS Database | 5/7 |
| 74 | Wyandotte Cave | Indiana | Crawford | 9.200 | 14806 | 256 | 78.0 | Lee Wenning | 03/96 |
| 75 | Snail Shell Cave System | Tennessee | Rutherford | 9.071 | 14598 | 144 | 43.9 | Jeff Sims | 07/86 |
| 76 | Dry Cave | New Mexico | Eddy | 9.010 | 14500 | 207 | 63.1 | Stan Allison e-mail | 4/9 |
| 77 | Duncan Field System | Oklahoma | Adair | 8.920 | 14355 | 124 | 37.8 | Keith (Andy) Harris e-mail | 04/03 |
| 78 | Webster Cave Complex | Kentucky | Breckenridge | 8.682 | 13972 | 0 | 0.0 | Ben Tobin WCCSG e-mail | 6/9 |
| 79 | Dunbar Cave - Roy Woodard System (Saltpeter) | Tennessee | Montgomery | 8.600 | 13840 | 90 | 27.4 | NSS News V46N9P363 | 09/88 |
| 80 | Rice Cave (Saltpeter) | Tennessee | Van Buren | 8.590 | 13824 | 210 | 64.0 | Tenn.Cave Survey | 02/03 |
| 81 | Vinegar Ridge (Buckingham Palace) Cave | Kentucky | Hart | 8.410 | 13535 | 211 | 64.3 | Alan Glennon e-mail | 02/97 |
| 82 | Ludingtons Cave | West Virginia | Greenbrier | 8.296 | 13351 | 250 | 76.2 | WVASS Database | 5/7 |
| 83 | Cuyler Cave | Tennessee | Sevier | 8.160 | 13132 | 78 | 23.8 | Steve Pierce | 07/86 |
| 84 | Powder Mill Creek Cave | Missouri | Shannon | 8.047 | 12950 | 103 | 31 | M.S.S. Baker | 02/04 |
| 85 | Grassy Cove Saltpetre Cave (Saltpeter) | Tennessee | Cumberland | 7.893 | 12703 | 367 | 111.9 | Deep Caves of TAG, John Stembel | 10/01 |
| 86 | Wolf River (Jaguar) Cave (Saltpeter) | Tennessee | Fentress | 7.890 | 12698 | 160 | 48.8 | Tony Groves e-mail | 6/6 |
| 87 | Great EX(pectations) Cave | Wyoming | Washakie | 7.854 | 12640 | 1408 | 429.2 | NSS News V44N6 (Peter Shifflett) | 06/86 |
| 88 | Lee Cave | Kentucky | Edmonson | 7.817 | 12580 | 0 | 0.0 | CRF | 08/87 |
| 89 | Cathedral-Falmouth System (Under Water) | Florida | Suwannee | 7.769 | 12503 | 190 | 57.9 | Die langsten Unterwasserholensysteme der Welt | 9/8 |
| 90 | Whistling Cave | Indiana | Lawrence | 7.760 | 12489 | 0 | 0.0 | CIG S.Collins | 08/93 |
| 91 | Unthanks Cave | Virginia | Lee | 7.750 | 12472 | 0 | 0.0 | VSS Long Cave List | 02/03 |
| 92 | Stompbottom Cave | Virginia | Tazewell | 7.730 | 12440 | 319 | 97.2 | VSS Long Cave List | 02/03 |
| 93 | Climax Cave | Georgia | Decatur | 7.730 | 12440 | 80 | 24.4 | F.Hutchison | 06/86 |
| 94 | Russell Cave (N.M.) (169) | Alabama | Jackson | 7.576 | 12192 | 400 | 121.9 | Deep Caves of TAG, John Stembel | 10/01 |
| 95 | Haws Spring Cave | Tennessee | Cannon | 7.576 | 12192 | 150 | 45.7 | TCS | 01/96 |
| 96 | Long Hollow (Dyke's/Mud-&-Slime) Cave System | Kentucky | Pulaski | 7.497 | 12065 | 235 | 71.6 | Mark Turner e-mail | 11/98 |
| 97 | Old Bellamy (Derekson)(Santa Fe River Rise) Cave Sys. (Under Water) | Florida | Alachua | 7.386 | 11887 | 160 | 48.8 | Albert Krause e-mail | 10/7 |
| 98 | Paxtons Cave | Virginia | Alleghany | 7.260 | 11684 | 71 | 21.6 | VSS Long Cave List | 02/03 |
| 99 | Lisanby Cave | Kentucky | Caldwell | 7.220 | 11619 | 0 | 0.0 | Mike Dyas | 06/89 |
| 100 | Farmers System - 1 | Kentucky | Pulaski | 7.179 | 11553 | 202 | 61.6 | Darrell Adkins e-mail | 1/7 |
| 101 | Acme 5 Mine / Quarry Cave | West Virginia | Greenbrier | 7.120 | 11459 | 241 | 73.5 | Ron Fulcher e-mail & jim Hixson | 06/98 |
| 102 | McFail's Cave | New York | Schoharie | 7.091 | 11412 | 295 | 89.9 | Simeon Warner e-mail | 8/5 |
| 103 | Zarathustra Cave (Saltpeter) | Tennessee | Fentress | 7.030 | 11314 | 40 | 12.2 | Bill Dean | 07/86 |
| 104 | Grayson Gunnar Cave | Kentucky | Wayne | 7.030 | 11314 | 0 | 0.0 | Lacie Braley e-mail | 9/6 |
| 105 | Cassell Cave System | West Virginia | Pocohontas | 7.020 | 11298 | 140 | 42.7 | Gangsta Mappers | 03/03 |
| 106 | Helictite Cave | Virginia | Highland | 7.000 | 11265 | 170 | 51.8 | VSS Long Cave List | 02/03 |
| 107 | Blanchard Springs Cave | Arkansas | Stone | 7.000 | 11265 | 0 | 0.0 | USFS Caverns Ad. - J.W.Ramey | 01/80 |
| 108 | Camps Gulf Cave (Saltpeter) | Tennessee | Van Buren | 6.818 | 10973 | 368 | 112.2 | Deep Caves of TAG, John Stembel | 10/01 |
| 109 | Hue Hue Cave (Lava Tube) | Hawaii | Hawaii | 6.711 | 10800 | 1623 | 494.7 | Stephan Kempe | 10/99 |
| 110 | Simmons Mingo - My Cave System | West Virginia | Rand./Pocahon. | 6.700 | 10783 | 683 | 208.2 | Bob Thrun | 06/82 |
| 111 | Devils Icebox | Missouri | Boone | 6.685 | 10758 | 0 | 0 | M.S.S. House | 02/04 |
| 112 | Sherfield's Cave | Arkansas | Newton | 6.660 | 10718 | 58 | 17.7 | Doug Robertson | 06/92 |
| 113 | Beacon Woods - Waynes World System (Under Water) | Florida | Pasco | 6.629 | 10668 | 160 | 48.8 | Caves and Karst of Florida, 2008 NSS Convention | 7/8 |
| 114 | Newberry - Bane Cave | Virginia | Bland | 6.610 | 10638 | 380 | 115.8 | VSS Deep Cave List | 02/03 |
| 115 | Paul Penley's Cave | Virginia | Bland | 6.600 | 10622 | 346 | 105.5 | Virginia Speleological Survey | 05/04 |
| 116 | Lost River Cave System | Kentucky | Warren | 6.501 | 10462 | 0 | 0.0 | Green River Review - Ref. J.Wells | 12/86 |
| 117 | Clarks Cave | Virginia | Bath | 6.434 | 10355 | 0 | 0.0 | Virginia Speleological Survey | 08/94 |
| 118 | Fallen Rock Cave | Virginia | Tazewell | 6.388 | 10280 | 0 | 0.0 | Virginia Speleological Survey | 1987 |
| 119 | Blissits Cave | Kentucky | Breckenridge | 6.307 | 10150 | 0 | 0.0 | Ft. Knox Grotto/Lowcrawler Newsletter | 11/85 |
| 120 | D.C. Jester Cave System (Gypsum) | Oklahoma | Greer | 6.254 | 10065 | 35 | 10.7 | Sue Bozeman | 03/88 |
| 121 | Guffey Cave (317) | Alabama | Marshall | 6.198 | 9975 | 210 | 64.0 | Alabama Cave Survey | 1994 |
| 122 | Breathing Cave | Virginia | Bath | 6.160 | 9914 | 364 | 110.9 | Gangsta Mappers | 01/04 |
| 123 | Bowden Cave System | West Virginia | Randolph | 6.084 | 9791 | 190 | 57.9 | Bob Gulden | 03/02 |
| 124 | Pettyjohns Cave | Georgia | Walker | 6.074 | 9775 | 234 | 71.3 | Georgia Speleological Survey | 03/91 |
| 125 | Chinn Springs Cave | Arkansas | Indpendence | 6.030 | 9704 | 252 | 76.8 | Jeff Bartlett e-mail | 10/8 |
| 126 | Espey Cave (Saltpeter) | Tennessee | Cannon | 6.027 | 9700 | 200 | 61.0 | Tenn.Cave Survey | 02/03 |
| 127 | Tumbling Rock Cave (171) (Saltpeter) | Alabama | Jackson | 6.022 | 9691 | 454 | 138.4 | Georgia Underground V32N4P38] | 09/96 |
| 128 | Pautler Cave | Illinois | Monroe | 6.000 | 9656 | 0 | 0.0 | Speleo Digest | 12/3 |
| 129 | Jugornot Cave | Kentucky | Pulaski | 5.950 | 9576 | 262 | 79.9 | Lee Florea e-mail | 03/04 |
| 130 | Guess (Creek) Cave (594) (Saltpeter) | Alabama | Jackson | 5.936 | 9553 | 30 | 9.1 | Alabama Cave Survey | 03/85 |
| 131 | Little Brush Creek Cave | Utah | Uintah | 5.933 | 9548 | 658 | 200.6 | www.caves.org/grotto/timpgrotto/ | 01/03 |
| 132 | Blowing Springs Cave | Tennessee | Coffee | 5.720 | 9205 | 270 | 82.3 | Hal Love | 05/97 |
| 133 | Spring Valley Caverns | Minnesota | Fillmore | 5.650 | 9093 | 149 | 45.4 | John Ackerman e-mail | 8/7 |
| 134 | Illinois (Little Mammoth) Caverns | Illinois | Monroe | 5.624 | 9051 | 0 | 0.0 | WCS V22N4P65 | 08/82 |
| 135 | Stagebarn Crystal Cave | South Dakota | Meade | 5.610 | 9028 | 326 | 99.4 | Michael Coughlin | 02/93 |
| 136 | Precinct Eleven Cave | Kentucky | Rockcastle | 5.593 | 9001 | 135 | 41.1 | List of Mapped Caves of Kentucky | 01/86 |
| 137 | Chilly Bowl Cave | Arkansas | Newton | 5.579 | 8979 | 218 | 66.4 | Rodney Tennyson e-mail | 7/8 |
| 138 | Marengo Cave | Indiana | Crawford | 5.560 | 8948 | 75 | 22.9 | Gary Roberson e-mail | 01/98 |
| 139 | Byer's Cave System | Georgia | Dade | 5.500 | 8851 | 350 | 106.7 | Grorgia Underground V24N1 | 03/87 |
| 140 | Keala Cave (Lava Tube) | Hawaii | Hawaii | 5.410 | 8707 | 610 | 185.9 | Stephan Kempe, IUS Com. on Vol.Cave NL | 12/99 |
| 141 | Sinking Cove Cave System | Tennessee | Franklin | 5.350 | 8610 | 457 | 139.3 | Rick Buice | 09/89 |
| 142 | New River Cave | Virginia | Giles | 5.293 | 8518 | 359 | 109.4 | Tim Kilby | 1990 |
| 143 | Fox Hole | Tennessee | Van Buren | 5.230 | 8417 | 297 | 90.5 | Tenn.Cave Survey | 02/03 |
| 144 | Chris Cave | Kentucky | Breckinridge | 5.082 | 8179 | 0 | 0.0 | David Frazier e-mail | 12/01 |
| 145 | Spring Hollow Cave | Virginia | Bland | 5.050 | 8127 | 320 | 97.5 | VSS | 1987 |
| 146 | Abrogast - Cave Hollow Cave System | West Virginia | Tucker | 5.019 | 8077 | 310 | 94.5 | Bob Gulden | 09/85 |
| 147 | Ennis Cave | Arkansas | Stone | 5.000 | 8047 | 300 | 91.4 | Randy Rose e-mail | 09/98 |
| 148 | Blowhole (Nichols) Cave | Tennessee | Cannon | 4.962 | 7986 | 150 | 45.7 | David Parr | 07/86 |
| 149 | Reeve's Cave | Indiana | Monroe | 4.950 | 7966 | 168 | 51.2 | Garre Conner e-mail NSS#12462 | 03/02 |
| 150 | Destitute (Erwin's) Cave | West Virginia | Monroe | 4.940 | 7950 | 150 | 45.7 | Andy Murphy | 03/98 |
| 151 | Big Brush Creek Cave | Utah | Uintah | 4.920 | 7918 | 858 | 261.5 | www.caves.org/grotto/timpgrotto/ | 01/03 |
| 152 | Piquet Cave | Missouri | Pulaski | 4.864 | 7828 | 0 | 0 | M.S.S. House | 02/04 |
| 153 | Pine Hill Cave | Kentucky | Rockcastle | 4.834 | 7780 | 165 | 50.3 | List of Mapped Caves of Kentucky | 01/86 |
| 154 | Madison Blue Spring (Under Water) | Florida | Madison | 4.831 | 7775 | 120 | 36.6 | Bruic | 1997 |
| 155 | Centerville Cave | Tennessee | Hickman | 4.831 | 7775 | 45 | 13.7 | Tenn.Cave Survey | 02/03 |
| 156 | Linefork Cavern | Kentucky | Letcher | 4.825 | 7765 | 204 | 62.2 | 1997 speleo Digest | 1998 |
| 157 | Hamilton Cave | West Virginia | Pendleton | 4.742 | 7632 | 265 | 80.8 | Bob Gulden/Dave West | 09/96 |
| 158 | Mill Hollow Cave | Tennessee | Overton | 4.735 | 7620 | 180 | 54.9 | Tennessee Long Cave List | 09/92 |
| 159 | Springs Cave, Jackson Blue (Under Water) | Florida | Jackson | 4.735 | 7620 | 160 | 48.8 | Sheck Exley | 10/80 |
| 160 | Stamp's Cave | Tennessee | Putnam | 4.735 | 7620 | 100 | 30.5 | Gerald Moni | 07/86 |
| 161 | Telford Springs (Under Water) | Florida | Suwanee | 4.735 | 7620 | 72 | 21.9 | Caves and Karst of Florida, 2008 NSS Convention | 7/8 |
| 162 | Endless Caverns | Virginia | Rockingham | 4.730 | 7612 | 145 | 44.2 | VSS | 1995 |
| 163 | Amazing Maze Cave | Texas | Pecos | 4.721 | 7598 | 73 | 22.3 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 164 | Pleasant Ridge Cave | Tennessee | Cannon | 4.693 | 7553 | 260 | 79.2 | TCS | 01/96 |
| 165 | Garrison Cave #2 | Missouri | Christian | 4.659 | 7498 | 84 | 26 | Jonathan Beard e-mail | 1/9 |
| 166 | Cameron Cave | Missouri | Marion | 4.620 | 7435 | 25 | 8 | M.S.S. House | 02/04 |
| 167 | Redmond Creek cave | Kentucky | Wayne | 4.616 | 7429 | 0 | 0.0 | Bill Walden e-mail | 7/7 |
| 168 | Engle Double Pit (266) | Alabama | Jackson | 4.598 | 7400 | 520 | 158.5 | Alabama Cave Survey | 1975 |
| 169 | School Sink (Under Water) | Florida | ? | 4.598 | 7400 | 0 | 0.0 | Die langsten Unterwasserholensysteme der Welt | 9/8 |
| 170 | Union Cave | West Virginia | Monroe | 4.570 | 7355 | 291 | 88.7 | The West Virginia Caver V20N4P13 | 08/02 |
| 171 | Meramec Caverns | Missouri | Franklin | 4.549 | 7321 | 30 | 9 | M.S.S. Hauck | 02/04 |
| 172 | Gilley Cave | Virginia | Lee | 4.545 | 7314 | 450 | 137.2 | VSS | 1978 |
| 173 | Capshaw Cave | Tennessee | Putnam | 4.518 | 7271 | 32 | 9.8 | Tennessee Long Cave List | 09/92 |
| 174 | Skull Cave | New York | Albany | 4.508 | 7255 | 0 | 0.0 | Thom Engel | 04/87 |
| 175 | Buckeye Creek Cave System | West Virginia | Greenbrier | 4.468 | 7191 | 190 | 57.9 | WVASS Database | 5/7 |
| 176 | Dulaneys Cave | Virginia | Giles | 4.440 | 7145 | 601 | 183.2 | VSS Long & Deep Cave Lists | 05/04 |
| 177 | Starnes Cave | Virginia | Giles | 4.400 | 7081 | 359 | 109.4 | VSS Long & Deep Cave Lists | 02/03 |
| 178 | Cass (Suicide) Cave | West Virginia | Pocahontas | 4.400 | 7081 | 322 | 98.1 | Greg Springer e-mail | 05/03 |
| 179 | Jess Elliot Cave (323) | Alabama | Jackson | 4.368 | 7030 | 147 | 44.8 | 1998 NSS Conventon | 08/98 |
| 180 | Carpenter - Swago Pit System | West Virginia | Pocahontas | 4.356 | 7010 | 239 | 72.8 | WVASS Database | 5/7 |
| 181 | Morrell (Worley) Cave (Saltpeter) | Tennessee | Sullivan | 4.356 | 7010 | 60 | 18.3 | TCS | 01/96 |
| 182 | Harlansburg Cave | Pennsylvania | Lawrence | 4.323 | 6957 | 20 | 6.1 | Kim Metzgar e-mail | 2/5 |
| 183 | Parker Cave | Kentucky | Edmonson | 4.300 | 6920 | 0 | 0.0 | CKKC | 1979 |
| 184 | Colliers Cave | Virginia | Pulaski | 4.300 | 6920 | 0 | 0.0 | VSS Long Cave List | 02/03 |
| 185 | Cornstarch Cave (Black House Mt. System) | Tennessee | Fentress | 4.299 | 6919 | 250 | 76.2 | Tenn.Cave Survey | 02/03 |
| 186 | Your Cave / Iron Cave | Tennessee | White | 4.280 | 6888 | 262 | 79.9 | Tenn.Cave Survey | 02/03 |
| 187 | Warrens Cave | Florida | Alachua | 4.261 | 6857 | 0 | 0.0 | Caves and Karst of Florida, 2008 NSS Convention | 7/8 |
| 188 | Peacock Cave I-II System (Under Water) | Florida | Suwanee | 4.259 | 6854 | 210 | 64.0 | Die langsten Unterwasserholensysteme der Welt | 9/8 |
| 189 | Waynes Cave | Indiana | Monroe | 4.250 | 6840 | 0 | 0.0 | NSS Convention - Terry Cox | 1973 |
| 190 | Chip's Hole System (Pipeline) (Under Water) | Florida | Wakalla | 4.222 | 6795 | 306 | 93.3 | WKPP - Casey McKinlay e-mail | 7/7 |
| 191 | Montague Cave (379) | Alabama | Jackson | 4.220 | 6791 | 406 | 123.7 | Deep Caves of TAG, John Stembel | 10/01 |
| 192 | Fixin'-to-die Cave | Colorado | Garfield | 4.220 | 6791 | 266 | 81.1 | Ed LaRock e-mail | 7/6 |
| 193 | Shovel Eater Cave | West Virginia | Pendleton | 4.200 | 6759 | 534 | 162.8 | GVKS | 3/9 |
| 194 | Sharps Cave | West Virginia | Pocahontas | 4.189 | 6742 | 140 | 42.7 | George Dasher | 06/88 |
| 195 | Great Onyx Cave (M.C.N.P.) | Kentucky | Edmonson | 4.186 | 6737 | 212 | 64.6 | Bob Gulden (CRF) | 4/9 |
| 196 | Greenville Saltpeter Cave | West Virginia | Monroe | 4.167 | 6706 | 75 | 22.9 | WVASS Database | 5/7 |
| 197 | Hart Springs System (Under Water) | Florida | Gilchrist | 4.162 | 6698 | 80 | 24.4 | Caves and Karst of Florida, 2008 NSS Convention | 7/8 |
| 198 | Reed's Cave | South Dakota | Custer | 4.160 | 6695 | 207 | 63.1 | Steve Baldwin via Bruce Zerr e-mail | 01/03 |
| 199 | Lost Creek Cave (Saltpeter) | Tennessee | White | 4.122 | 6634 | 285 | 86.9 | Tenn.Cave Survey | 02/03 |
| 200 | Parks' Ranch Cave (Gypsum) | New Mexico | Eddy | 4.098 | 6595 | 100 | 30.5 | Dave Belski e-mail | 03/03 |
| 201 | Under the Road Cave | Kentucky | Breckenridge | 4.089 | 6581 | 0 | 0.0 | KSFGB | 1978 |
| 202 | Corkscrew Cave | Virginia | Tazewell | 4.060 | 6534 | 515 | 157.0 | 340' drop Bill Balfour e-mail | 05/04 |
| 203 | Pueo Cave (Lava Tube) | Hawaii | Hawaii | 4.008 | 6450 | 337 | 102.7 | Doug Medville e-mail | 10/6 |
| 204 | Falling Spring Cave (1302) | Alabama | Jackson | 4.005 | 6445 | 100 | 30.5 | ACS | 04/80 |
| 205 | Swamp River cave | Tennessee | Van Buren | 4.000 | 6437 | 100 | 30.5 | Hal Love | 05/97 |
| 206 | Porters Cave. | Virginia | Bath | 4.000 | 6437 | 50 | 15.2 | Phil Lucas e-mail | 7/7 |
| 207 | Church Cave | California | Tulare | 3.996 | 6431 | 547 | 166.7 | David Engel e-mail | 09/99 |
| 208 | Morgan Cave (Saltpeter) | Tennessee | Monroe | 3.988 | 6418 | 163 | 49.7 | Tenn.Cave Survey | 02/03 |
| 209 | Wades Cave | West Virginia | Greenbrier | 3.980 | 6405 | 200 | 61.0 | Bill Balfour | 09/85 |
| 210 | White Lobster Cave | Kentucky | Pulaski | 3.977 | 6400 | 0 | 0.0 | NSS News V57N10P308 | 10/99 |
| 211 | Onego Millstream - Roaring Creek Cave | West Virginia | Pendleton | 3.971 | 6391 | 85 | 25.9 | Mike Dyas | 07/83 |
| 212 | Twin Level Cave System | Kentucky | Chris./Todd | 3.900 | 6276 | 0 | 0.0 | Preston Forsythe e-mail | 03/03 |
| 213 | Krueger System | Illinois | Monroe | 3.856 | 6206 | 0 | 0.0 | NSS News V42N4P65 | 08/82 |
| 214 | Green Fork Falls Cave - Kathys Icebox Cave | Montana | Lewis & Clark | 3.853 | 6201 | 0 | 0 | Caving Int. N5 - Mike Beer | 11/79 |
| 215 | Rowland Cave | Arkansas | Stone | 3.800 | 6116 | 0 | 0.0 | SLUG | 01/85 |
| 216 | Inner Space Caverns | Texas | Williamson | 3.799 | 6114 | 69 | 21.0 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 217 | Bonnet Spring (Under Water) | Florida | Suwannee | 3.788 | 6096 | 132 | 40.2 | Caves and Karst of Florida, 2008 NSS Convention | 7/8 |
| 218 | Blue Spring-Green Sink Cave System (Yana) (Under Water) | Florida | Lafayette | 3.788 | 6096 | 60 | 18.3 | Sheck Exley | 05/80 |
| 219 | Grand Caverns | Virginia | Augusta | 3.780 | 6083 | 116 | 35.4 | The Region Record (VAR) V18N4P1 | 9/5 |
| 220 | Three Fingers Cave | New Mexico | Eddy | 3.700 | 5955 | 581 | 177.1 | Rocky Mountain Caving V8N3P22 | SUM91 |
| 221 | Robinson Ridge Saltpeter Cave (Saltpeter) | Tennessee | Cannon /Coffee | 3.696 | 5948 | 365 | 111.3 | Tenn.Cave Survey | 02/03 |
| 222 | Nanna Cave | Tennessee | Rutherford | 3.694 | 5945 | 116 | 35.4 | Jeff Sims | 07/86 |
| 223 | Flower Pot | West Virginia | Randolph | 3.689 | 5937 | 352 | 107.3 | WVASS Database | 5/7 |
| 224 | Buffalo Cave (Saltpeter) | Tennessee | Fentress | 3.688 | 5935 | 154 | 46.9 | Tennessee Long Cave List | 09/92 |
| 225 | Hang 'Em High Cave | Tennessee | Marion | 3.665 | 5898 | 528 | 160.9 | NSS News V50N1P6-18 | 01/92 |
| 226 | Still Spring Cave | Missouri | Douglas | 3.654 | 5881 | 106 | 32 | M.S.S. Baker | 02/04 |
| 227 | Hornsby Spring Cave System (Under Water) | Florida | Alachua | 3.651 | 5876 | 150 | 45.7 | Sheck Exley | 05/80 |
| 228 | Russells Reserve Cave | Virginia | Bath | 3.640 | 5858 | 139 | 42.4 | Phil Lucas e-mail | 7/7 |
| 229 | Laurel Creek Cave System | West Virginia | Monroe | 3.603 | 5798 | 80 | 24.4 | George Dasher | 01/81 |
| 230 | Zicafoose Blowhole | West Virginia | Greenbrier | 3.589 | 5776 | 320 | 97.5 | Bob Kirk e-mail | 5/6 |
| 231 | Henpeck Mill Cave | Tennessee | Cannon | 3.523 | 5670 | 74 | 22.6 | NSS News V66N5p8-10 | 5/8 |
| 232 | Crossroads Cave | Virginia | Bath | 3.520 | 5665 | 95 | 29.0 | VSS | 07/95 |
| 232 | Indian Creek Cave | Texas | Uvalde | 3.511 | 5650 | 157 | 47.9 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 233 | Spider Cave (C.C.N.P.) | New Mexico | Eddy | 3.510 | 5649 | 136 | 41.5 | Stan Allison e-mail | 12/8 |
| 234 | The Serpent | Virginia | Bath | 3.510 | 5649 | 0 | 0.0 | Phil Lucas e-mail | 7/7 |
| 235 | Carns Cave (441) | Alabama | Jackson | 3.509 | 5647 | 0 | 0.0 | Bill Torode | 12/83 |
| 236 | Castle (Alexander) Cave | Arkansas | Stone | 3.500 | 5633 | 0 | 0.0 | Mike Warshauer | 02/80 |
| 237 | Manatee Springs Cave System (Under Water) | Florida | Levy | 3.477 | 5596 | 95 | 29.0 | Sheck Exley | 10/80 |
| 238 | Tyson Spring Cave | Minnesota | Fillmore | 3.462 | 5572 | 135 | 41.1 | John Ackerman e-mail | 8/7 |
| 239 | Saltpeter Cave | Indiana | Monroe | 3.460 | 5568 | 0 | 0.0 | BIGN V10N2 - John Mcintosh | 06/71 |
| 240 | Lama Lua System (Lava Tube) | Hawaii | Hawaii | 3.447 | 5547 | 617 | 188.1 | Doug Medville e-mail | 04/04 |
| 241 | Plastic Bag Cave | West Virginia | Greenbrier | 3.419 | 5502 | 135 | 41.1 | Bill Balfour | 09/85 |
| 242 | Yer Cave | Virginia | Giles | 3.410 | 5488 | 271 | 82.6 | VSS Long Cave List | 05/04 |
| 243 | Cornwell Cave | West Virginia | Preston | 3.410 | 5488 | 0 | 0.0 | WVASS | 1977 |
| 244 | Charles Cave | Indiana | Washington | 3.407 | 5483 | 73 | 22.3 | CIG | 10/86 |
| 245 | Two Bit Cave | Indiana | Harrison | 3.390 | 5456 | 251 | 76.5 | D.Dible | 08/91 |
| 246 | Bethlehem Cave | South Dakota | Meade | 3.380 | 5440 | 170 | 51.8 | Marc Ohms e-mail | 5/5 |
| 247 | Coach (Hundred Domes) Cave | Kentucky | Edmonson | 3.380 | 5440 | 0 | 0.0 | Glenn Merrill | 07/84 |
| 248 | Anderson Cave (357) | Alabama | Shelby | 3.373 | 5428 | 90 | 27.4 | ACS | 04/80 |
| 249 | Williams Cave | Virginia | Bath | 3.352 | 5395 | 0 | 0.0 | Ron Simmons | 07/79 |
| 250 | Barberry Cave | Virginia | Bath | 3.350 | 5391 | 330 | 100.6 | VSS Long Cave List | 02/03 |
| 251 | Jewett II Cave | Tennessee | Cumberland | 3.349 | 5390 | 636 | 193.9 | Charles Clark | 07/86 |
| 252 | Fredericksburg Cave | Indiana | Washington | 3.343 | 5380 | 0 | 0.0 | C. Roy - NSS Convention | 1973 |
| 253 | Howard's Waterfall Cave (Saltpeter) | Georgia | Dade | 3.330 | 5359 | 110 | 33.5 | Georgia Underground | 10/87 |
| 254 | Cool Spring Cave | Kentucky | Trigg | 3.293 | 5300 | 0 | 0.0 | List of the Mapped Caves of Kentucky | 1982 |
| 255 | Custer Hollow Cave | Tennessee | Franklin | 3.284 | 5285 | 100 | 30.5 | Jay Cox | 07/86 |
| 256 | Papoose Cave | Idaho | Idaho | 3.250 | 5230 | 831 | 253.3 | Tom Miller e-mail | 09/98 |
| 257 | Dog Hill - Donnehue Cave System | Indiana | Lawrence | 3.250 | 5230 | 85 | 25.9 | BIGN V15N3 - David Bolton | 05/80 |
| 258 | China Cave | Tennessee | Putnam | 3.223 | 5187 | 200 | 61.0 | Tenn.Cave Survey | 02/03 |
| 259 | Barrack Zourie Cave | New York | Schoharie | 3.220 | 5182 | 153 | 46.6 | Thom Engel - NY Long Caves List | 01/96 |
| 260 | Moore Caven (426) | Alabama | Morgan | 3.220 | 5182 | 30 | 9.1 | ACS | 04/80 |
| 261 | Kemling Cave | Iowa | Dubuque | 3.220 | 5182 | 0 | 0.0 | NSS News V66N5P28 | 5/8 |
| 262 | Dry Cave | West Virginia | Greenbrier | 3.200 | 5150 | 100 | 30.5 | WVACS | 1989 |
| 263 | Wild Woman Cave | Oklahoma | Murray | 3.177 | 5113 | 60 | 18.3 | Sue Bozeman | 08/95 |
| 264 | Silvertip Cave System | Montana | Flathead | 3.166 | 5095 | 1052 | 321 | Alpine Karst | Sum77 |
| 265 | Indian Grave Point Cave (Saltpeter) | Tennessee | DeKalb | 3.166 | 5095 | 112 | 34.1 | David Parr | 07/86 |
| 266 | Keeton Cave (446) (Saltpeter) | Alabama | Colbert | 3.132 | 5040 | 80 | 24.4 | ACS | 04/80 |
| 267 | Blair Spring Cave System | Indiana | Monroe | 3.120 | 5021 | 125 | 38.1 | NSS Convention - John Bassett | 1973 |
| 268 | Hot Caverns | Missouri | Perry | 3.106 | 4999 | 0 | 0 | M.S.S. Moss | 02/04 |
| 269 | Upper Twin Cave | Indiana | Lawrence | 3.097 | 4984 | 36 | 11.0 | SMP | 03/91 |
| 270 | Laurel Caverns | Pennsylvania | Fayette | 3.090 | 4973 | 447 | 136.2 | Walt Hamm e-mail | 09/00 |
| 271 | Glenwood Caverns (Fairy Cave) | Colorado | Garfield | 3.090 | 4973 | 200 | 61.0 | Richard Rhinehart e-mail | 05/03 |
| 272 | Kaupulehu System (Lava Tube) | Hawaii | Hawaii | 3.077 | 4952 | 527 | 160.6 | Doug Medville e-mail | 04/03 |
| 273 | Carter Cave | Kentucky | Todd | 3.066 | 4934 | 0 | 0.0 | Preston Forsythe e-mail from Joe Park | 03/03 |
| 274 | Catacomb Cave (Lava Tube) | Hawaii | Hawaii | 3.065 | 4933 | 190 | 57.9 | Doug Medville e-mail | 02/03 |
| 275 | Pruett Saltpetre Cave | Kentucky | Warren | 3.060 | 4925 | 0 | 0.0 | Joe Saunders | 01/85 |
| 276 | Edgewood Caverns | New Mexico | Santa Fe | 3.045 | 4900 | 150 | 45.7 | CRF Ann. Report | 1977 |
| 277 | Northtown (Short's Moonshine) Cave | Kentucky | Hart | 3.045 | 4900 | 0 | 0.0 | List of Mapped Caves of Kentucky | 12/83 |
| 278 | Wolfpen-Hollow Blowhole (Wind Cave) | West Virginia | Grant | 3.030 | 4876 | 500 | 152.4 | WVASS Database | 5/7 |
| 279 | Oregon Caves | Oregon | Josephine | 3.030 | 4876 | 400 | 121.9 | Steve Knutson | 01/85 |
| 280 | Waterfall Plunge | Tennessee | Overton | 3.030 | 4876 | 230 | 70.1 | TCS | 02/03 |
| 281 | Ellison Cave | West Virginia | Monroe | 3.030 | 4876 | 177 | 53.9 | The West Virginia Caver V19N5P6 | 10/01 |
| 282 | Case Cave | Georgia | Dade | 3.030 | 4876 | 80 | 24.4 | GSS | 01/79 |
| 283 | Falls Cave | Arizona | Coconino | 3.030 | 4876 | 0 | 0.0 | Az. Reg.Assn. News | 1969 |
| 284 | Johnsons Cave (Saltpeter) | Tennessee | Putnam | 3.022 | 4863 | 200 | 61.0 | Jeff Sims | 07/86 |
| 285 | Little Bear Cave | Arkansas | Newton | 3.010 | 4844 | 176 | 53.6 | Rodney Tennyson e-mail | 08/00 |
| 286 | New Trout Cave | West Virginia | Pendleton | 3.001 | 4830 | 125 | 38.1 | Bob Gulden/Dave West | 02/97 |
| 287 | Banes Spring Cave | Virginia | Bland | 3.000 | 4828 | 330 | 100.6 | NSS News V38N8 | 08/80 |
| 288 | Jackpot Cave | Kentucky | ? | 3.000 | 4828 | 0 | 0.0 | CRF web site | 06/01 |
| 289 | Ohio (Reames Cave) Caverns | Ohio | Champaign | 2.992 | 4815 | 103 | 31.4 | NSS News V55N8P227-228 | 08/97 |
| 290 | Big Sulphur (Peedee) Cave | Kentucky | Trigg | 2.983 | 4801 | 0 | 0.0 | List of the Mapped Caves of Kentucky | 01/83 |
| 291 | Selman Cave System (Gypsum) | Oklahoma | Woodward | 2.979 | 4794 | 0 | 0.0 | NSS News V60N7P204 | 07/02 |
| 292 | Overholts Blowing Cave | West Virginia | Pocahontas | 2.970 | 4780 | 601 | 183.2 | Gary Storrick | 06/00 |
| 293 | Cathedral Cave | Missouri | Crawford | 2.962 | 4767 | 0 | 0 | M.S.S. Schwart | 02/04 |
| 294 | Lockwood Cave (Saltpeter) | Tennessee | White | 2.955 | 4756 | 60 | 18.3 | Tenn.Cave Survey | 02/03 |
| 295 | Farmers System - 2 | Kentucky | Pulaski | 2.943 | 4736 | 166 | 50.6 | Darrell Adkins e-mail | 1/7 |
| 296 | Crystal (Sequoia) Cave | California | Tulare | 2.940 | 4731 | 328 | 100.0 | Joel Despain e-mail | 01/99 |
| 297 | Limrock Blowing Cave (311) | Alabama | Jackson | 2.936 | 4725 | 27 | 8.2 | 1996 SERA Guidebook P20-21 | 07/96 |
| 298 | Run to the Mill (Bore Hole) Cave | Tennessee | Cumberland | 2.926 | 4709 | 381 | 116.1 | Buddy Lane | 07/86 |
| 299 | Hardins - Junkyard Cave System | Tennessee | Davidson | 2.921 | 4701 | 122 | 37.2 | David Parr | 07/86 |
| 300 | Smith Valley Cave | Kentucky | Edmonson | 2.920 | 4699 | 0 | 0.0 | List of the Mapped Caves of Kentucky | 1982 |
| 301 | Sally Turpin Hollow Cave | Kentucky | Wayne | 2.920 | 4699 | 0 | 0.0 | List of the Mapped Caves of Kentucky | 1982 |
| 302 | Fossil Mtn.Ice Cave - Wind Cave System | Wyoming | Teton | 2.900 | 4667 | 644 | 196.3 | NSS Conv. 1988 | 05/88 |
| 303 | Wind Cave | Kentucky | Pulaski | 2.890 | 4651 | 0 | 0.0 | List of the Mapped Caves of Kentucky | 01/86 |
| 304 | Ameerican Bottoms 1 Cave (Sink Cave) | Indiana | Greene | 2.865 | 4611 | 0 | 0.0 | NSS News V67N6P26 | 6/9 |
| 305 | Turkey Roost Cave | West Virginia | Pocahontas | 2.841 | 4572 | 490 | 149.4 | WVASS Database | 5/7 |
| 306 | Keystone River Cave | Tennessee | Van Buren | 2.841 | 4572 | 400 | 121.9 | Tenn.Cave Survey | 02/03 |
| 307 | Stinging Nettle Cave | Tennessee | Fentress | 2.841 | 4572 | 320 | 97.5 | TCS | 09/86 |
| 308 | Loves Blowing Cave | Tennessee | Cannon | 2.841 | 4572 | 275 | 83.8 | TCS | 1987 |
| 309 | Greenhouse Cave | Tennessee | Claiborne | 2.841 | 4572 | 200 | 61.0 | TCS | 03/03 |
| 310 | Tom Pack Cave | Tennessee | Franklin | 2.841 | 4572 | 175 | 53.3 | Tennessee Long Cave List | 09/72 |
| 311 | Arch Cave | Tennessee | Putnam | 2.841 | 4572 | 150 | 45.7 | Tenn.Cave Survey | 02/03 |
| 312 | Beacon Cave | West Virginia | Mercer | 2.841 | 4572 | 150 | 45.7 | WVASS Database | 5/7 |
| 313 | Endless (McKettrick) Cave | New Mexico | Eddy | 2.841 | 4572 | 102 | 31.1 | NSS Caves Files - Dick Blenz | 10/5 |
| 314 | Campbell Saltpetre Cave (Saltpeter) | Tennessee | Fentress | 2.841 | 4572 | 40 | 12.2 | Keith Goggin | 07/86 |
| 315 | Higginbotham Cave System | West Virginia | Greenbrier | 2.838 | 4567 | 94 | 28.7 | Bill Balfour | 09/85 |
| 316 | Elk River (Fortune Radish) Cave | West Virginia | Randolph | 2.831 | 4556 | 152 | 46.3 | Doug Medville | 05/88 |
| 317 | Alva Blankenship Cave | Virginia | Giles | 2.827 | 4550 | 326 | 99.4 | Philip Schuchardt e-mail | 9/6 |
| 318 | Mark Twain Cave | Missouri | Marion | 2.820 | 4538 | 0 | 0 | M.S.S. House | 02/04 |
| 319 | Parker's Pit Cave | Indiana | Harrison | 2.803 | 4511 | 206 | 62.8 | Capers | 1990 |
| 320 | Sauta (Blowing Wind) Cave (50) (Saltpeter) | Alabama | Jackson | 2.802 | 4509 | 150 | 45.7 | Bill Varnedoe e-mail | 06/99 |
| 321 | Water Sink | Virginia | Highland | 2.800 | 4506 | 0 | 0.0 | VSS | 8/8 |
| 322 | Triple-S Cave | Kentucky | Wayne | 2.796 | 4500 | 0 | 0.0 | List of the Mapped Caves of Kentucky | 1982 |
| 323 | Boone-Cannonball Cave System | Indiana | Owen | 2.790 | 4490 | 30 | 9.1 | K.Strunk | 08/91 |
| 324 | Chambers Cave | West Virginia | Monroe | 2.776 | 4468 | 100 | 30.5 | WVASS | 1977 |
| 325 | Great Scott Cave | Missouri | Washington | 2.751 | 4427 | 0 | 0 | M.S.S. Sutton | 02/04 |
| 326 | Foxhole No.1 Cave | West Virginia | Greenbrier | 2.750 | 4426 | 190 | 57.9 | Geroge Dasher | 07/83 |
| 327 | Falling Spring Cave | West Virginia | Randolph | 2.748 | 4422 | 240 | 73.2 | WVASS | 1995 |
| 328 | Under the Wall Cave (Lava Tube) | Hawaii | Hawaii | 2.736 | 4403 | 464 | 141.4 | Doug Medville e-mail | 10/99 |
| 329 | Deadhorse Cave (Lava Tube) | Washington | Skamania | 2.735 | 4402 | 192 | 58.5 | Garry Petrie e-mail | 03/03 |
| 330 | Newell Spring Cave | Kentucky | Pulaski | 2.734 | 4400 | 0 | 0.0 | List of the Mapped Caves of Kentucky | 1982 |
| 331 | Blood Cave | Montana | Flathead | 2.734 | 4400 | 0 | 0 | Alpine Karst V2P15-22 | 6/28 |
| 332 | Doe Mountain Cave | Virginia | Giles | 2.712 | 4365 | 628 | 191.4 | Bill Balfour e-mail | 02/99 |
| 333 | Signal Light Pit | Tennessee | Marion | 2.711 | 4363 | 126 | 38.4 | Charles Clarkion - Terry Cox | 07/86 |
| 334 | Glory Hole Cave | Georgia | Grady | 2.708 | 4358 | 40 | 12.2 | GSS | 1987 |
| 335 | General Davis Cave | West Virginia | Greenbrier | 2.704 | 4352 | 0 | 0.0 | NSS Bulletin V46N1 | 04/84 |
| 336 | Mundys Landing Cave System | Kentucky | Woodford | 2.703 | 4350 | 0 | 0.0 | List of the Mapped Caves of Kentucky | 1982 |
| 337 | Crownover Saltpeter Cave (Saltpeter) | Tennessee | Franklin | 2.700 | 4345 | 68 | 20.7 | Tenn.Cave Survey | 02/03 |
| 338 | Pless Cave | Indiana | Lawrence | 2.700 | 4345 | 0 | 0.0 | NSS Convention - Art Palmer | 1973 |
| 339 | Buckners Cave | Indiana | Monroe | 2.699 | 4344 | 0 | 0.0 | NSS Convention - Terry Cox | 1979 |
| 340 | Gypsum Cave (Lava Tube) | Idaho | Lincoln | 2.682 | 4316 | 138 | 42.1 | Tom Miller e-mail | 09/98 |
| 341 | Cave-Without-A-Name (Century Caverns) | Texas | Kendall | 2.676 | 4307 | 89 | 27.1 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 342 | Savage (Cook) Cave | Kentucky | Logan | 2.659 | 4279 | 80 | 24.4 | List of the Mapped Caves of Kentucky | 1982 |
| 343 | Microwave-A-Hole System (1927) | Alabama | Jackson | 2.652 | 4268 | 500 | 152.4 | ACS | 03/85 |
| 344 | Shakerag Cave | Tennessee | Marion | 2.652 | 4268 | 190 | 57.9 | Speleonews V33N4P135 | 09/89 |
| 345 | Goliath's Cave | Minnesota | Fillmore | 2.652 | 4268 | 120 | 36.6 | John Ackerman e-mail | 8/7 |
| 346 | Labyrinth (Estimate) | New York | Jefferson | 2.652 | 4268 | 60 | 18.3 | NSS Convention | 1979 |
| 347 | Frick's Cave | Georgia | Walker | 2.648 | 4262 | 185 | 56.4 | Brent Aulenbach e-mail | 9/7 |
| 348 | Hell's Hole | Indiana | Harrison | 2.642 | 4252 | 134 | 40.8 | David Black | 06/84 |
| 349 | Allen Branch Cave | Missouri | Shannon | 2.632 | 4236 | 65 | 20 | MSS Long Cave List | 02/04 |
| 350 | Waste Management System (Lava Tube) | Hawaii | Hawaii | 2.628 | 4229 | 125 | 38.1 | Doug Medville e-mail | 3/9 |
| 351 | Sinks-of-Roundstone | Kentucky | Rockcastle | 2.628 | 4229 | 0 | 0.0 | List of the Mapped Caves of Kentucky | 1982 |
| 352 | Bear Marauder Cave | Tennessee | Macon | 2.617 | 4212 | 81 | 24.7 | NSS News V55N5P132 | 05/97 |
| 353 | Long Island Cave (1300) (Saltpeter) | Alabama | Jackson | 2.606 | 4194 | 91 | 27.7 | ACS | 01/98 |
| 354 | Tallucah Cave (47) (Saltpeter) | Alabama | Morgan | 2.606 | 4194 | 90 | 27.4 | ACS | 08/87 |
| 355 | Howes - Barytes Cave System | New York | Schoharie | 2.600 | 4184 | 0 | 0.0 | ?? | 19?? |
| 356 | John Martin Cave (Lava Tube) | Hawaii | Hawaii | 2.584 | 4159 | 0 | 0.0 | IOS Comm. on Volcanic Caves News #13 | 06/97 |
| 357 | Indian Cave (Saltpeter) | Tennessee | Grainger | 2.580 | 4152 | 77 | 23.5 | The Speleotype V25N3P10 | 05/92 |
| 358 | Tumbling Shoals (Little Airplane) Cave | Tennessee | Hamilton | 2.580 | 4152 | 60 | 18.3 | Ricky Buice | 07/86 |
| 359 | Kings Saltpeter Cave (Saltpeter) | Tennessee | Claiborne | 2.568 | 4133 | 174 | 53.0 | Tennessee Long Cave List | 09/92 |
| 360 | Lamons Cave (214) | Alabama | Morgan | 2.566 | 4130 | 80 | 24.4 | ACS | 08/87 |
| 361 | Jaybird Cave | Tennessee | Perry | 2.565 | 4128 | 50 | 15.2 | Tenn.Cave Survey | 02/03 |
| 362 | Wilson's Cave (M.C.N.P.) | Kentucky | Hart | 2.557 | 4115 | 0 | 0.0 | CRF web site | 06/01 |
| 363 | Mountain Cove Farm #3 Cave (Ulla Cave) | Georgia | Walker | 2.553 | 4109 | 200 | 61.0 | ||
| 364 | Old Blowing Cave (505) | Alabama | Marshall | 2.546 | 4097 | 100 | 30.5 | ACS | 6/25 |
| 365 | Big Hole Cave | Arkansas | Boone | 2.540 | 4088 | 196 | 59.7 | Rodney Tennyson e-mail | 08/00 |
| 366 | Lowmoor Cave | Virginia | Alleghany | 2.540 | 4088 | 0 | 0.0 | VSS Long Cave List | 02/03 |
| 367 | Hancock #1 Cave | Virginia | Smyth | 2.529 | 4070 | 171 | 52.1 | Ken Walsh | 8/8 |
| 368 | Amish Blowing Cave System (Saltpeter) | Tennessee | Perry | 2.522 | 4059 | 45 | 13.7 | Tenn.Cave Survey | 02/03 |
| 369 | Maple Leaf Cave | Missouri | Perry | 2.521 | 4057 | 0 | 0 | M.S.S. Moss | 02/04 |
| 370 | Great Big Bottom Cave | Tennessee | White | 2.509 | 4038 | 90 | 27.4 | TCS | 02/03 |
| 371 | Ape Cave (Lava Tube) | Washington | Skamania | 2.500 | 3983 | 598 | 182.3 | Garry Petrie e-mail | 03/03 |
| 372 | Millers Cove Cave | Virginia | Roanoke | 2.500 | 4023 | 350 | 106.7 | Phil Lucas e-mail | 7/7 |
| 373 | Cemetary Pit | Georgia | Dade | 2.500 | 4023 | 200 | 61.0 | ||
| 374 | Kartchner Caverns | Arizona | Cochise | 2.500 | 4023 | 100 | 30.5 | NSS Convention | 1991 |
| 375 | Hubbards Cave (Saltpeter) | Tennessee | Warren | 2.485 | 3999 | 137 | 41.8 | TCS | 01/96 |
| 376 | Big Sink Cave | Kentucky | Pulaski | 2.485 | 3999 | 0 | 0.0 | LMCK | 01/82 |
| 377 | Schumates Icehouse Cave | West Virginia | Monroe | 2.481 | 3993 | 174 | 53.0 | WVASS | 1995 |
| 378 | Lookout Mountain Cave (Saltpeter) | Tennessee | Hamilton | 2.481 | 3993 | 75 | 22.9 | TCS | 01/96 |
| 379 | T.S.O.D. Cave (Talus,Anorthosite) | New York | Essex | 2.472 | 3978 | 0 | 0.0 | Atlas - Great Caves of the World | 1989 |
| 380 | Airman's Cave | Texas | Travis | 2.443 | 3932 | 30 | 9.1 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 381 | Gunner Cave | Arkansas | Stone | 2.418 | 3891 | 60 | 18.3 | ||
| 382 | Umi'i Manu System (Lava Tube) | Hawaii | Hawaii | 2.415 | 3887 | 1869 | 569.7 | Doug Medville | 02/00 |
| 383 | Virgin Cave | New Mexico | Eddy | 2.400 | 3862 | 723 | 220.4 | Paul Burger e-mail | 4/8 |
| 384 | El Capitan Cave | Alaska | P.O.W. Island | 2.390 | 3846 | 429 | 130.8 | NSS Caves Files - Dick Blenz | 10/5 |
| 385 | Piddling Pit | West Virginia | Pocahontas | 2.389 | 3845 | 96 | 29.3 | Greg Springer | 11/90 |
| 386 | Burfield (Blue Hole)(Johnson Fork) Cave | Kentucky | Wayne | 2.380 | 3830 | 0 | 0.0 | LMCK | 01/82 |
| 387 | Tony Sinks - Cox Cave (78) | Alabama | Jackson | 2.367 | 3809 | 570 | 173.7 | Georgia Underground V32N4P37 | 09/96 |
| 388 | Big Coon Caverns | Tennessee | Union | 2.367 | 3809 | 219 | 66.8 | TLCL | 09/92 |
| 389 | Fletcher Cave | West Virginia | Monroe | 2.364 | 3804 | 74 | 22.6 | George Dasher | 02/94 |
| 390 | Blowing Cave | Kentucky | Wayne | 2.361 | 3800 | 0 | 0.0 | LMCK | 01/82 |
| 391 | Crystal Caverns (Gypsum) | New Mexico | DeBaca | 2.355 | 3790 | 331 | 100.9 | Dave Belski e-mail | 03/03 |
| 392 | Colossal Cave | Arizona | Pima | 2.348 | 3779 | 0 | 0.0 | The Desert Caver V23N4P13 | 12/93 |
| 393 | Trout Cave | West Virginia | Pendleton | 2.344 | 3772 | 128 | 39.0 | Bob Gulden/Dave West | 09/96 |
| 394 | Salamander Cave | Virginia | Giles | 2.340 | 3766 | 325 | 99.1 | VSS Long Cave List | 02/03 |
| 395 | Dynamited(Blasted)(Lemei Road)Cave (Lava Tube) | Washington | Skamania | 2.338 | 3763 | 325 | 99.1 | Garry Petrie e-mail | 03/03 |
| 396 | Buckner Spring Cave | Kentucky | Hart | 2.335 | 3758 | 0 | 0.0 | LMCK | 01/82 |
| 397 | Sinnett - Thorn Mtn. Cave System | West Virginia | Pendleton | 2.329 | 3748 | 386 | 117.7 | Paul Stevens | 07/79 |
| 398 | Hurricane Ridge Cave | West Virginia | Monroe | 2.329 | 3748 | 241 | 73.5 | WVASS Database | 5/7 |
| 399 | Kennamer Cave (490) | Alabama | Jackson | 2.326 | 3743 | 200 | 61.0 | ACS | 08/87 |
| 400 | Canyon Cave (1000) | Alabama | Jackson | 2.320 | 3734 | 300 | 91.4 | ACS | 08/87 |
| 401 | Gary Self Pit (290) | Alabama | Jackson | 2.314 | 3724 | 560 | 170.7 | ACS | 08/87 |
| 402 | Double Barrel Shotgun Cave (Gypsum) | New Mexico | Lincoln | 2.314 | 3724 | 287 | 87.5 | Dave Belski e-mail | 03/03 |
| 403 | Druid Cave | West Virginia | Preston | 2.307 | 3713 | 275 | 83.8 | Greg Springer e-mail | 08/98 |
| 404 | Columbine Crawl | Wyoming | Teton | 2.301 | 3703 | 1551 | 472.7 | Warren Anderson e-mail | 01/01 |
| 405 | Raccoon Mountain (Crystal(City)) Caverns | Tennessee | Hamilton | 2.301 | 3703 | 175 | 53.3 | TCS | 01/96 |
| 406 | Natural Bridge System, St Marks (Under Water) | Florida | Wakalla | 2.293 | 3690 | 110 | 33.5 | WKPP - Casey McKinlay e-mail | 7/7 |
| 407 | Salt River Cave (221) | Alabama | Jackson | 2.289 | 3684 | 80 | 24.4 | ACS | 07/86 |
| 408 | Duck Creek Lava Tube (Lava Tube) | Utah | Kane | 2.283 | 3674 | 300 | 91.4 | R.L.Crawford-Worlds Longest Lava Tubes | 1982 |
| 409 | Gorham Cave-Spring Acre Cave | Kentucky | Logan | 2.280 | 3669 | 0 | 0.0 | Preston Forsythe e-mail | 5/6 |
| 410 | Dry Shave Cave | Tennessee | Warren | 2.273 | 3658 | 150 | 45.7 | TCS | 01/96 |
| 411 | Toilet Bowl Cave | Tennessee | Anderson | 2.273 | 3658 | 120 | 36.6 | TCS | 01/96 |
| 412 | Big Sycamore Cave | Tennessee | Grundy | 2.273 | 3658 | 80 | 24.4 | TCS | 03/03 |
| 413 | Bull Cave | Tennessee | Blount | 2.272 | 3656 | 924 | 281.6 | Mark Lassiter | 08/98 |
| 414 | Bone Cave East | Tennessee | Van Buren | 2.270 | 3653 | 183 | 55.8 | TCS | 01/96 |
| 415 | Bransford Cave | West Virginia | Greenbrier | 2.270 | 3653 | 72 | 21.9 | WVACS | 1987 |
| 416 | Wilkson Hollow Horror Hole | Tennessee | Franklin | 2.259 | 3636 | 512 | 156.1 | TCS | 01/96 |
| 417 | Devils Eye Cave System (Under Water) | Florida | Gilchrist | 2.259 | 3636 | 160 | 48.8 | Caves and Karst of Florida, 2008 NSS Convention | 7/8 |
| 418 | Indian Spring (Creek) Cave (Under Water) | Florida | Wakalla | 2.253 | 3626 | 160 | 48.8 | Caves and Karst of Florida, 2008 NSS Convention | 7/8 |
| 419 | War Eagle Cave (565) | Alabama | Jackson | 2.244 | 3611 | 157 | 47.9 | ACS | 08/87 |
| 420 | Barnett - Waters Folly Cave System | Kentucky | Pulaski | 2.243 | 3610 | 0 | 0.0 | LMCK | 01/82 |
| 421 | Big Red Cave (Lava Tube) | Hawaii | Hawaii | 2.241 | 3607 | 760 | 231.6 | Doug Medville e-mail | 09/02 |
| 422 | Peppersauce Cave | Arizona | Pinal | 2.225 | 3581 | 203 | 61.8 | Speleo Digest | 12/3 |
| 423 | Cottonwood Cave | New Mexico | 2.223 | 3578 | 370 | 112.8 | Dave Belski e-mail | 03/03 | |
| 424 | Zahner Cave | Missouri | Perry | 2.220 | 3573 | 0 | 0 | M.S.S. Quamen | 02/04 |
| 425 | Talley Ditch Cave (248) | Alabama | Jackson | 2.219 | 3571 | 27 | 8.2 | ACS | 08/87 |
| 426 | Roaring Springs Cave | Arizona | Coconino | 2.216 | 3566 | 0 | 0.0 | ||
| 427 | Bear Hole | Tennessee | Grundy | 2.206 | 3550 | 44 | 13.4 | TCS | 1/8 |
| 428 | Skagnasty Cave | Tennessee | Putnam | 2.201 | 3542 | 120 | 36.6 | TCS | 01/96 |
| 429 | Cave Mtn. Cave | West Virginia | Pendleton | 2.200 | 3541 | 382 | 116.4 | Bob Gulden | 06/01 |
| 430 | Meisner Crevice Cave | Missouri | Perry | 2.200 | 3541 | 0 | 0.0 | M.S.S. Oliver | 02/04 |
| 431 | Alastor Cave | Tennessee | Fentress | 2.197 | 3536 | 186 | 56.7 | NSS Caves Files - Dick Blenz | 10/5 |
| 432 | Snow Caverns | Missouri | Perry | 2.182 | 3512 | 0 | 0.0 | M.S.S. Walsh | 02/04 |
| 433 | Sorcerer's Cave | Texas | Terrell | 2.181 | 3510 | 570 | 173.7 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 434 | Carpenter's (Holland) Cave | Kentucky | Allen | 2.178 | 3505 | 0 | 0.0 | LMCK | 01/82 |
| 435 | Logan / Greensnake Cave | Kentucky | Pulaski | 2.175 | 3500 | 0 | 0.0 | LMCK | 01/82 |
| 436 | Scrooge Cave (Gypsum) | New Mexico | Lincoln | 2.170 | 3492 | 46 | 14.0 | Dave Belski e-mail | 03/03 |
| 437 | Manu Nui Lava Tube (Lava Tube) | Hawaii | Hawaii | 2.150 | 3460 | 1143 | 348.4 | NSS NEWS V65N10P21 | 9/7 |
| 438 | Lammon's Ladder Cave | Indiana | Orange | 2.148 | 3457 | 0 | 0.0 | List of the long Caves of Indiana | 1989 |
| 439 | Cave of the Winds | Colorado | El Paso | 2.147 | 3456 | 294 | 89.6 | Richard Rhinehart e-mail | 2/7 |
| 440 | New (Slaughter Canyon) Cave (C.C.N.P.) | New Mexico | Eddy | 2.140 | 3444 | 234 | 71.3 | Stan Allison e-mail | 12/8 |
| 441 | Goufffre | Tennessee | Cumberland | 2.131 | 3430 | 515 | 157.0 | TCS | 01/96 |
| 442 | Alexander Caverns | Pennsylvania | Mifflin | 2.127 | 3423 | 162 | 49.4 | Fall MAR 1999 Guide Book P6 | 10/99 |
| 443 | Indian Creek Caverns | Missouri | Stone | 2.121 | 3413 | 0 | 0.0 | M.S.S. Map | 02/04 |
| 444 | Cavin Cave | Virginia | Lee | 2.120 | 3412 | 0 | 0.0 | VSS Long Cave List | 02/03 |
| 445 | Mertz Cave | Missouri | Perry | 2.107 | 3391 | 0 | 0.0 | M.S.S. Coons | 02/04 |
| 446 | Clover Hollow Cave | Virginia | Giles | 2.103 | 3384 | 344 | 104.9 | Bill Douty e-mail | 12/97 |
| 447 | Canto VII Cave | Indiana | Lawrence | 2.100 | 3380 | 70 | 21.3 | List of the long Caves of Indiana | 1989 |
| 448 | Caverns of Sonora | Texas | Sutton | 2.097 | 3375 | 122 | 37.2 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 449 | Cave Spring Cave (53) | Alabama | Morgan | 2.095 | 3372 | 0 | 0.0 | ACS | 08/87 |
| 450 | Tarkiln Cave | Kentucky | Carter | 2.093 | 3368 | 35 | 10.7 | ESSO Grotto via e-mail from Allen Blair | 12/5 |
| 451 | Cathedral Cave (165) | Alabama | Marshall | 2.086 | 3357 | 124 | 37.8 | ACS | 6/25 |
| 452 | Hughes Cave (157) (Saltpeter) | Alabama | Morgan | 2.085 | 3355 | 91 | 27.7 | ACS | 6/25 |
| 453 | Burns #2 Cave | West Virginia | Greenbrier | 2.083 | 3352 | 200 | 61.0 | WVASS Database | 5/7 |
| 454 | Millers Cave | Kentucky | Rockcastle | 2.083 | 3352 | 120 | 36.6 | LMCK | 01/82 |
| 455 | Bob Williams Cave (Saltpeter) | Tennessee | Cannon | 2.083 | 3352 | 100 | 30.5 | TLCL | 09/92 |
| 456 | Devils Dungeon Cave | Tennessee | Pickett | 2.083 | 3352 | 100 | 30.5 | TLCL | 09/92 |
| 457 | Dry Creek Cave (276) | Alabama | Jackson | 2.083 | 3352 | 20 | 6.1 | ACS | 08/87 |
| 458 | Glover's Cave | Kentucky | Christ./Todd. | 2.082 | 3351 | 0 | 0.0 | LMCK | 01/82 |
| 459 | Reasor Pump Cave | Virginia | Lee | 2.080 | 3347 | 200 | 61.0 | Bill Balfour e-mail | 06/99 |
| 460 | Bishop Cave | Tennessee | Bedford | 2.080 | 3347 | 60 | 18.3 | TCS | 01/96 |
| 461 | Rich Mountain Blowhole | Tennessee | Blount | 2.077 | 3343 | 840 | 256.0 | Tenn.Cave Survey | 02/03 |
| 462 | Key Cave (99) | Alabama | Lauderdale | 2.074 | 3338 | 27 | 8.2 | ACS | 08/87 |
| 463 | Honeymoon Cave | Indiana | Washington | 2.071 | 3333 | 55 | 16.8 | List of the long Caves of Indiana | 1989 |
| 464 | Perkins Cave (348) | Alabama | Madison | 2.064 | 3322 | 150 | 45.7 | ACS | 6/25 |
| 465 | Geiger Cave / Houston Hollow (459) | Alabama | Jackson | 2.063 | 3320 | 360 | 109.7 | Deep Caves of TAG, John Stembel | 10/01 |
| 466 | Cox Cave | Missouri | Pulaski | 2.062 | 3318 | 63 | 19.2 | M.S.S. Baker | 02/04 |
| 467 | Buchanan Saltpetre Cave | Virginia | Smyth | 2.060 | 3315 | 0 | 0.0 | VSS | 1977 |
| 468 | Ted's Dig Cave | Indiana | Harrison | 2.058 | 3312 | 158 | 48.2 | NSS News V50N2P53 | 02/92 |
| 469 | Twisted Fissure | West Virginia | Randolph | 2.050 | 3299 | 175 | 53.3 | Devin Kouts | 09/98 |
| 470 | Patton Cave | West Virginia | Monroe | 2.040 | 3283 | 171 | 52.1 | George Dasher | 10/84 |
| 471 | Chadwells Cave (Saltpeter) | Tennessee | Claiborne | 2.034 | 3273 | 150 | 45.7 | TLCL | 09/92 |
| 472 | Locust Creek (Spring) Cave | West Virginia | Pocahontas | 2.025 | 3259 | 199 | 60.7 | NSS News V49N5P140 | 05/91 |
| 473 | Popcorn Spring Cave | Indiana | Lawrence | 2.023 | 3256 | 55 | 16.8 | NSS Conv. 1973 | 04/90 |
| 474 | Main Drain Cave | Kentucky | Pulaski | 2.010 | 3235 | 0 | 0.0 | Mapped Caves of Pulaski Co. | 02/00 |
| 475 | Gross-Skeleton Cave (224) | Alabama | Jackson | 2.008 | 3232 | 120 | 36.6 | ACS | 6/25 |
| 476 | Stanley Carden Cave (730) | Alabama | Dekalb | 2.007 | 3230 | 136 | 41.5 | ACS | 6/25 |
| 477 | Great Spirt Cave | Missouri | Pulaski | 2.007 | 3230 | 0 | 0.0 | M.S.S. House | 02/04 |
| 478 | Farmers System - 3 | Kentucky | Pulaski | 2.003 | 3224 | 166 | 50.7 | Darrell Adkins e-mail | 1/7 |
| 479 | M2 Blue (Under Water) | Florida | Madison | 2.003 | 3224 | 147 | 44.8 | NSS News V50N4P94 Not on Fla. Long cave list | 04/92 |
| 480 | Buddy Penleys Cave | Virginia | Bland | 2.000 | 3219 | 260 | 79.2 | VSS Long Cave List | 02/03 |
| 481 | Yell Cave | Tennessee | Bedford | 2.000 | 3219 | 101 | 30.8 | Lynn Roebuck e-mail | 03/04 |
| 482 | Wheeler Saltpeter Cave (163) | Alabama | Jackson | 2.000 | 3219 | 44 | 13.4 | Georgia Underground V29N3P18-19 | 09/92 |
| 483 | Buffalo Creek Cave | Kentucky | Edmonson | 2.000 | 3219 | 0 | 0.0 | NSS News | 12/94 |
| 484 | Soup City Cave | West Virginia | Pocahontas | 2.000 | 3219 | 0 | 0.0 | Spring 2009 WVASS Meeting | 5/9 |
| 485 | Walker Spring Cave | Tennessee | Franklin | 1.999 | 3217 | 164 | 50.0 | TCS | 02/03 |
| 486 | Witheros Cave | Virginia | Bath | 1.996 | 3212 | 0 | 0.0 | VSS | 1987 |
| 487 | Poplar Cave (340) | Alabama | Morgan | 1.993 | 3207 | 231 | 70.4 | Tom Moss | 09/89 |
| 488 | Burnside Branch Cave | West Virginia | Monroe | 1.990 | 3203 | 257 | 78.3 | WVASS | 1977 |
| 489 | Tumbling Creek Cave | Arkansas | ? | 1.989 | 3201 | 0 | 0.0 | CIM NO.9 | 10/80 |
| 490 | Blowing Cave | Indiana | Harrison | 1.989 | 3201 | 0 | 0.0 | ISS V1#1 | 04/90 |
| 491 | Mullen Spring Cave | Kentucky | Rockcastle | 1.988 | 3199 | 0 | 0.0 | LMCK | 01/82 |
| 492 | Show Farm Cave | Indiana | Orange | 1.980 | 3187 | 63 | 19.2 | Mark Deebel e-mail | 06/00 |
| 493 | Reddell Cave | Arkansas | Newton | 1.980 | 3187 | 15 | 4.6 | Rodney Tennyson e-mail | 08/00 |
| 494 | Bat River Cave | Minnesota | Fillmore | 1.978 | 3183 | 115 | 35.1 | John Ackerman e-mail | 8/7 |
| 495 | "D"Road Cave (Tree Cast, Pole 46) (Lava Tube) | Hawaii | Hawaii | 1.976 | 3180 | 140 | 42.7 | HSS Newsletter N9P5 | 06/01 |
| 496 | Hering Cave (6) | Alabama | Madison | 1.975 | 3178 | 40 | 12.2 | ACS | 04/80 |
| 497 | Phil Coots Cave | Kentucky | Todd | 1.969 | 3169 | 0 | 0.0 | Mike Dyas | 01/88 |
| 498 | Carcass Cave (Gypsum) | New Mexico | De Baca | 1.966 | 3164 | 333 | 101.5 | Dave Belski e-mail | 03/03 |
| 499 | Hog Wallow Cave | Tennessee | Overton | 1.966 | 3164 | 121 | 36.9 | TCS | 1/8 |
| 500 | Lost Cove Cave (Saltpeter) | Tennessee | Franklin | 1.952 | 3141 | 195 | 59.4 | NSS Caves Files - Dick Blenz | 10/5 |
| 501 | Warren Springs Cave | Tennessee | Bedford | 1.952 | 3141 | 93 | 28.3 | Tenn.Cave Survey | 02/03 |
| 502 | Sinking Creek Cave | Indiana | Washington | 1.932 | 3109 | 0 | 0.0 | IUSC V7#1 | 04/90 |
| 503 | Hairy Hole | Virginia | Wise | 1.930 | 3106 | 240 | 73.2 | Phil Lucas e-mail | 7/7 |
| 504 | Breached Wall Cave (Lava Tube) | Hawaii | Hawaii | 1.930 | 3106 | 0 | 0.0 | Doug Medville e-mail | 3/9 |
| 505 | Little Big Hole | West Virginia | Monroe | 1.926 | 3100 | 0 | 0.0 | The West Virginia Caver V19N5P7 | 10/01 |
| 506 | Organ Springs Cave | Indiana | Washington | 1.924 | 3096 | 50 | 15.2 | David Black | 01/96 |
| 507 | Hurricane Crawl Cave | California | Tulare | 1.921 | 3092 | 235 | 71.6 | Joel Despain e-mail | 01/99 |
| 508 | Dripping Spring Cave | Kentucky | Logan | 1.921 | 3092 | 0 | 0.0 | Mike Dyas | 11/91 |
| 509 | Kelly Spring Cave | Illinois | Monroe | 1.920 | 3090 | 0 | 0.0 | ICS V21N1 | 02/81 |
| 510 | Bruce Cave | Missouri | Pulaski | 1.913 | 3079 | 0 | 0.0 | Florence Rucker Map | 1947 |
| 511 | Bad Medicine Cave | Wyoming | Big Horn | 1.910 | 3074 | 472 | 143.9 | Marc Ohms e-mail | 09/99 |
| 512 | Bear Cave | Pennsylvania | Westmoreland | 1.910 | 3074 | 72 | 21.9 | NSS Caves Files - Dick Blenz | 10/5 |
| 513 | Big Springs (Blowing) Cave | West Virginia | Tucker | 1.909 | 3072 | 60 | 18.3 | Alan Carpenter | 09/86 |
| 514 | Lewis and Clark Caverns | Montana | Jefferson | 1.906 | 3067 | 577 | 176 | The Explorer P34 - Bob Richards | 03/85 |
| 515 | Hail Cave | Kentucky | Pulaski | 1.902 | 3061 | 0 | 0.0 | LMCK | 01/85 |
| 516 | Left Tit Pit | West Virginia | Randolph | 1.898 | 3055 | 110 | 33.5 | WVASS | 1995 |
| 517 | Hells Below Cave | New Mexico | Eddy | 1.894 | 3048 | 550 | 167.6 | Dave Belski e-mail | 03/03 |
| 518 | Cave of the Madonna | New Mexico | Eddy | 1.894 | 3048 | 500 | 152.4 | Dave Belski e-mail | 03/03 |
| 519 | Weeki Wachee Spring (Under Water) | Florida | Hernando | 1.894 | 3048 | 407 | 124.1 | Caves and Karst of Florida, 2008 NSS Convention | 7/8 |
| 520 | Roaring Panther Cave | Tennessee | Fentress | 1.894 | 3048 | 284 | 86.6 | Tenn.Cave Survey | 02/03 |
| 521 | Lake Tarpon-Tarpon Springs System (Under Water) | Florida | Pinellas | 1.894 | 3048 | 170 | 51.8 | Caves and Karst of Florida, 2008 NSS Convention | 7/8 |
| 522 | Cueva Guapa Delnorte | Tennessee | VanBuren | 1.894 | 3048 | 150 | 45.7 | TCS | 02/03 |
| 523 | Hillis Cave | Tennessee | Van Buren | 1.894 | 3048 | 130 | 39.6 | Tenn.Cave Survey | 02/03 |
| 524 | John Fisher Cave | Tennessee | Smith | 1.894 | 3048 | 125 | 38.1 | TCS - Moni | 07/86 |
| 525 | Austin Peay Cave | Tennessee | Montgomery | 1.894 | 3048 | 90 | 27.4 | TCS - Moni | 07/86 |
| 526 | Big Mouth Cave | Tennessee | Grundy | 1.894 | 3048 | 50 | 15.2 | Tenn.Cave Survey | 02/03 |
| 527 | Windy River Cave | Tennessee | Van Buren | 1.894 | 3048 | 50 | 15.2 | TCS | 05/92 |
| 528 | SCAG | New York | Jefferson | 1.894 | 3048 | 40 | 12.2 | NSS Conv. G.B. | 1979 |
| 529 | Godwin Cave (Saltpeter) | Tennessee | Maury | 1.894 | 3048 | 40 | 12.2 | TLCL | 09/92 |
| 530 | Hans Kennamer Cave (3268) | Alabama | Madison | 1.894 | 3048 | 30 | 9.1 | ACS | 6/25 |
| 531 | Janus Pit System | Arkansas | Stone | 1.894 | 3048 | 0 | 0.0 | NSS News | 01/79 |
| 532 | Sullivan Annex Cave | Indiana | Lawrence | 1.890 | 3042 | 78 | 23.8 | BIG 19#4 | 04/94 |
| 533 | Smokehole Cave | Kentucky | Rockcastle | 1.890 | 3042 | 0 | 0.0 | Blue Grass Grotto - ref: Gary O'Dell | 08/86 |
| 534 | Vickers Cave | Virginia | Washington | 1.890 | 3042 | 0 | 0.0 | VSS Long Cave List | 02/03 |
| 535 | Mystery (Surprize, Fallbrook) Cave | New York | Sullivan | 1.889 | 3040 | 0 | 0.0 | Underworld | 1982 |
| 536 | La Baume Cave | Missouri | Ralls | 1.879 | 3024 | 0 | 0.0 | M.S.S. Map | 02/04 |
| 537 | Martin Cave System (Gypsum) | New Mexico | Chaves | 1.870 | 3009 | 34 | 10.4 | Dave Belski e-mail | 03/03 |
| 538 | Longhorn Caverns | Texas | Burnet | 1.869 | 3008 | 130 | 39.6 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 539 | Cedar Creek Cave | Tennessee | Greene | 1.869 | 3008 | 75 | 22.9 | Tenn.Cave Survey | 02/03 |
| 540 | Saltpeter - Moon Cave System | Kentucky | Carter | 1.867 | 3005 | 83 | 25.3 | Mike Dyas | 04/84 |
| 541 | Skinframe Sinks (Rice) Cave | Kentucky | Caldwell | 1.867 | 3005 | 0 | 0.0 | LMCK | 07/87 |
| 542 | Brushy Creek Cave System | Indiana | Harrison | 1.866 | 3003 | 35 | 10.7 | David Black | 01/96 |
| 543 | Slide-In Cave | Kentucky | Pulaski | 1.864 | 3000 | 0 | 0.0 | LMCK | 01/87 |
| 544 | Hoy Cave | Kentucky | Simpson | 1.864 | 3000 | 0 | 0.0 | Chris Grey | 1967 |
| 545 | Indian Cave | Kentucky | Warren | 1.864 | 3000 | 0 | 0.0 | LMCK | 01/87 |
| 546 | Ganter Cave | Kentucky | Edmonson | 1.862 | 2997 | 0 | 0.0 | LMCK | 01/87 |
| 547 | P-Bar (PeBar) Cave | Wyoming | Big Horn | 1.851 | 2979 | 486 | 148.1 | Tomes | 1977 |
| 548 | Anderson Spring Cave | Georgia | Walker | 1.839 | 2960 | 0 | 0.0 | GSS | 1987 |
| 549 | Tumbling Creek Cave | Missouri | Taney | 1.839 | 2960 | 0 | 0.0 | MSS Long Cave List | 02/04 |
| 550 | Smittle Cave | Missouri | Wright | 1.837 | 2956 | 0 | 0.0 | M.S.S. Taylor | 02/04 |
| 551 | French Creek Cave | Montana | Beaverhead | 1.831 | 2947 | 434 | 132 | Caves of Montana | 03/78 |
| 552 | Buffalo Creek Cave | Kentucky | M.C.N.P. | 1.828 | 2942 | 0 | 0.0 | CRF | 11/02 |
| 553 | Rollins Cave #2 | Missouri | Pulaski | 1.828 | 2942 | 0 | 0.0 | M.S.S. Map | 02/04 |
| 554 | Paint Rock River Cave (2934) | Alabama | Jackson | 1.817 | 2924 | 539 | 164.3 | Deep Caves of TAG, John Stembel | 10/01 |
| 555 | Smokehole Cave | Virginia | Giles | 1.814 | 2919 | 110 | 33.5 | Bill Douty e-mail | 12/97 |
| 556 | Aqua (Lockridge) Cave | Virginia | Highland | 1.800 | 2897 | 0 | 0.0 | VSS Long Cave List | 02/03 |
| 557 | Jewett I Cave | Tennessee | Cumberland | 1.788 | 2878 | 615 | 187.5 | Charles Clark | 07/86 |
| 558 | Hole in the Rock Spring (Under Water) | Florida | Jackson | 1.783 | 2869 | 102 | 31.1 | Sheck Exley | 10/80 |
| 559 | Murphy Cave | Missouri | Marion | 1.773 | 2853 | 0 | 0.0 | M.S.S. Map | 02/04 |
| 560 | Ka'eleku Caverns (Lava Tube) | Hawaii | Maui | 1.772 | 2852 | 738 | 224.9 | Bob Richards e-mail | 12/99 |
| 561 | Locomotive Breath Cave. | Virginia | Alleghany | 1.770 | 2849 | 0 | 0.0 | VSS Long Cave List | 02/03 |
| 562 | Roubidoux Cave (Indian, Pike's Peak) | Missouri | Pulaski | 1.769 | 2847 | 0 | 0.0 | Jeffrey Crews e-mail | 9/4 |
| 563 | Mystic Cave | Oklahoma | Murray | 1.761 | 2834 | 0 | 0.0 | NSS Caves Files - Dick Blenz | 10/5 |
| 564 | McBride's Cave (1345) | Alabama | Jackson | 1.753 | 2821 | 513 | 156.4 | Georgia Underground V32N4P38 | 09/96 |
| 565 | Spring Creek Cave | Texas | Kendall | 1.748 | 2813 | 16 | 4.9 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 566 | Lower Uilani Cave (Lava Tube) | Hawaii | Hawaii | 1.742 | 2803 | 0 | 0.0 | William Halliday | 8/95 |
| 567 | Flynn (Sulphur Mtn.) Cave | Kentucky | Wayne | 1.740 | 2800 | 0 | 0.0 | LMCK | 01/82 |
| 568 | Falls (Panther) Creek (Lava) Cave (Lava Tube) | Washington | Skamania | 1.738 | 2797 | 413 | 125.9 | R.L.Crawford-Worlds Longest Lava Tubes | 1982 |
| 569 | Harmon's Waterfall Cave | West Virginia | Randolph | 1.736 | 2794 | 150 | 45.7 | WVASS | 1995 |
| 570 | Doodlebug Hole / Blowing Cave (195) | Alabama | Jackson | 1.727 | 2779 | 510 | 155.4 | ACS | 04/80 |
| 571 | Wolf Cave (192) (Saltpeter) | Alabama | Morgan | 1.727 | 2779 | 91 | 27.7 | ACS | 04/80 |
| 572 | Turtle Cave (198) | Alabama | Morgan | 1.727 | 2779 | 91 | 27.7 | ACS | 08/87 |
| 573 | Onondaga Cave | Missouri | Crawford | 1.725 | 2776 | 0 | 0.0 | M.S.S. House | 02/04 |
| 574 | Smith Cave | Kansas | Butler | 1.723 | 2773 | 42 | 12.8 | 1996 Speleo Digest | 1998 |
| 575 | Horseshoe Vally Cave (Gypsum) | Oklahoma | Greer | 1.715 | 2760 | 0 | 0.0 | NSS News | 08/95 |
| 576 | Farmers System - 4 Nameless | Kentucky | Pulaski | 1.714 | 2758 | 118 | 36.0 | Darrell Adkins e-mail | 1/7 |
| 577 | Durham Cave | Tennessee | Sumner | 1.710 | 2752 | 84 | 25.6 | TCS | 02/03 |
| 578 | Paradox Cave | Tennessee | VanBuren | 1.705 | 2744 | 400 | 121.9 | Georgia Underground V32N4P38 | 09/96 |
| 579 | Upper Mulepen Spring Cave | Tennessee | Grundy | 1.705 | 2744 | 110 | 33.5 | Tenn.Cave Survey | 02/03 |
| 580 | Cripps Mill Cave | Tennessee | DeKalb | 1.705 | 2744 | 100 | 30.5 | TCS - Gerald Moni | 03/83 |
| 581 | Bellamy Cave | Tennessee | Montgomery | 1.705 | 2744 | 80 | 24.4 | TCS | 02/03 |
| 582 | Jim Ray Cave | Indiana | Greene | 1.705 | 2744 | 20 | 6.1 | BIG V7#2 | 04/90 |
| 583 | Canyon Cave | Kentucky | Carter | 1.705 | 2744 | 0 | 0.0 | Annette Summers - Pholeos V15N1 | 1995 |
| 584 | Baker Creek Cave System | Nevada | White Pine | 1.705 | 2744 | 0 | 0 | Ellis Hedlund | 1971 |
| 585 | Kimbalton Mine Cave | Virginia | Giles | 1.705 | 2744 | 0 | 0.0 | VSS | 08/90 |
| 586 | Bryant's Cave | Indiana | Harrison | 1.700 | 2736 | 155 | 47.2 | David Black | 01/96 |
| 587 | Eric's River Cave | Indiana | Crawford | 1.700 | 2736 | 51 | 15.5 | Speleo Digest | 12/3 |
| 588 | Philpotts Pumphouse Cave | Tennessee | Bedford | 1.698 | 2733 | 100 | 30.5 | TCS | 01/96 |
| 589 | Abbott Saltpeter cave (Saltpeter) | Tennessee | Pickett | 1.698 | 2733 | 80 | 24.4 | TCS - Moni | 03/83 |
| 590 | Hick's Cave | New Mexico | Eddy | 1.684 | 2710 | 277 | 84.4 | Dave Belski e-mail | 03/03 |
| 591 | Silent River Cave | Arizona | ? | 1.683 | 2709 | 319 | 97.2 | Speleo Digest | 12/3 |
| 592 | Sitton's Cave | Georgia | Dade | 1.678 | 2700 | 30 | 9.1 | GSS | 1987 |
| 593 | DePriest Branch Cave (Saltpeter) | Tennessee | Lewis | 1.676 | 2697 | 86 | 26.2 | James Reyome e-mail | 02/01 |
| 594 | Natural Bridge Caverns | Texas | Comal | 1.673 | 2692 | 250 | 76.2 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 595 | Grahamton Cave | Kentucky | Meade | 1.665 | 2680 | 0 | 0.0 | LMCK | 01/82 |
| 596 | Illiad / Odyessy Cave System (1568) | Alabama | Jackson | 1.663 | 2676 | 493 | 150.3 | ACS | 03/95 |
| 597 | Spring Cave | Colorado | Rio Blanco | 1.660 | 2672 | 113 | 34.4 | Rocky Mtn. Caving | SUM93 |
| 598 | Steele's Cave | West Virginia | Monroe | 1.650 | 2655 | 57 | 17.4 | Ed Saugstad e-mail | 11/00 |
| 599 | Jessie Cave | Virginia | Russell | 1.648 | 2652 | 267 | 81.4 | VSS | 1977 |
| 600 | Cribb Cave | Virginia | Washington | 1.630 | 2623 | 243 | 74.1 | VSS Long Cave List | 02/03 |
| 601 | Prassell Ranch Cave | Texas | Kendall | 1.630 | 2623 | 39 | 11.9 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 602 | Everton's Cave | Indiana | Crawford | 1.628 | 2620 | 143 | 43.6 | David Black | 01/96 |
| 603 | April Cave | Iowa | Winneshiek | 1.627 | 2618 | 0 | 0.0 | Larry Welch | 06/89 |
| 604 | Halbrook Cave (416) | Alabama | Marshall | 1.623 | 2612 | 27 | 8.2 | ACS | 04/80 |
| 605 | Spring Cave | Kansas | Butler | 1.615 | 2599 | 0 | 0.0 | Caves in Kansas | 1993 |
| 606 | Youngs Creek Blowhole | Tennessee | Franklin | 1.610 | 2591 | 568 | 173.1 | Deep Caves of TAG, John Stembel | 10/01 |
| 607 | Apro Ject Cave | Indiana | Orange | 1.610 | 2591 | 0 | 0.0 | Scott Fee | 09/91 |
| 608 | Hurricane River Cave | Arkansas | Searcy | 1.607 | 2586 | 56 | 17.1 | Rodney Tennyson e-mail | 7/8 |
| 609 | Cemetery Sink (Hide-A-Bed) Cave | West Virginia | Greenbrier | 1.602 | 2578 | 146 | 44.5 | Bill Balfour | 07/97 |
| 610 | Cricket Maze Cave | West Virginia | Berkeley | 1.599 | 2573 | 117 | 35.7 | Bob Gulden | 11/90 |
| 611 | Rocket River Cave System | Texas | Coryell | 1.598 | 2572 | 54 | 16.5 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 612 | Catacombs Cave (Lava Tube) | California | Siskiyou | 1.598 | 2572 | 0 | 0.0 | CRF | 6/27 |
| 613 | Jansill/Driftwood Cave system (Gypsum) | New Mexico | Chaves | 1.592 | 2562 | 233 | 71.0 | Dave Belski e-mail | 03/03 |
| 614 | River Styx Cave | Texas | King | 1.592 | 2562 | 50 | 15.2 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 615 | Harmony Church Cave | Kentucky | Caldwell | 1.591 | 2560 | 0 | 0.0 | LMCK | 01/82 |
| 616 | Kool Spring Cave | Indiana | Orange | 1.590 | 2559 | 30 | 9.1 | Ash/Fee | 08/91 |
| 617 | Fanning Ranch North & South Cave (Gypsum) | New Mexico | 1.589 | 2557 | 45 | 13.7 | Dave Belski e-mail | 03/03 | |
| 618 | Tunnel Spring Cave | Missouri | Pulaski | 1.585 | 2551 | 82 | 25.0 | Jeffrey Crews e-mail | 06/03 |
| 619 | Hunters Cave | Missouri | Boone | 1.583 | 2548 | 76 | 23.2 | Bob Lerch e-mail | 12/6 |
| 620 | Dockenson (White's) Cave | Kentucky | Todd | 1.572 | 2530 | 0 | 0.0 | LMCK | 01/85 |
| 621 | Phantom Springs Cave | Texas | Jeff Davis | 1.571 | 2528 | 45 | 13.7 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 622 | New Castle Murder Hole | Virginia | Craig | 1.560 | 2511 | 240 | 73.2 | VSS Long & Deep Cave Lists | 02/03 |
| 623 | Mammoth Cave (Lava Tube) | California | Modoc | 1.559 | 2509 | 157 | 47.9 | Mike Sims e-mail. Mpped 1984-85 by Bruce Rogers, et al | 6/7 |
| 624 | Cooch - Webb Cave | Kentucky | Hart | 1.554 | 2501 | 0 | 0.0 | LMCK | 01/82 |
| 625 | New Discovery Cave | Kentucky | Meade | 1.554 | 2501 | 0 | 0.0 | LMCK | 01/82 |
| 626 | Red Goose Cave | Kentucky | Pulaski | 1.554 | 2501 | 0 | 0.0 | LMCK | 01/82 |
| 627 | Climax Cave | Kentucky | Rockcastle | 1.554 | 2501 | 0 | 0.0 | LMCK | 01/82 |
| 628 | Crystal Lake Cave | Iowa | Dubuque | 1.553 | 2499 | 0 | 0.0 | NSS Caves Files - Dick Blenz | 10/5 |
| 629 | Cave of the Bells | Arizona | Santa Cruz | 1.550 | 2494 | 0 | 0.0 | NSS Caves Files - Dick Blenz | 10/5 |
| 630 | Big Room Cave | Tennessee | Grundy | 1.545 | 2486 | 75 | 22.9 | Tennessee Long Cave List | 09/92 |
| 631 | Triple Engle Pit (Gypsum) | New Mexico | De Baca | 1.544 | 2485 | 442 | 134.7 | Dave Belski e-mail | 03/03 |
| 632 | Hickey Pot | Tennessee | Warren | 1.542 | 2482 | 500 | 152.4 | Tenn.Cave Survey | 02/03 |
| 633 | Mill Bluff (Lloyd's) Cave | Kentucky | Caldwell | 1.541 | 2480 | 0 | 0.0 | LMCK | 01/82 |
| 634 | Sinks of Gandy | West Virginia | Randolph | 1.537 | 2474 | 47 | 14.3 | George Dasher | 08/90 |
| 635 | Scott's Barn Cave / Bloodstone (907) | Alabama | Jackson | 1.536 | 2472 | 563 | 171.6 | Tom Moss | 12/95 |
| 636 | Slush Tube Cave | Indiana | Orange | 1.536 | 2472 | 0 | 0.0 | BIG V14#4 | 04/90 |
| 637 | Mystic Cave | West Virginia | Pendleton | 1.535 | 2470 | 280 | 85.3 | Bob Gulden | 11/92 |
| 638 | Qualkinbush Cave System | Indiana | Orange | 1.535 | 2470 | 78 | 23.8 | NSS News V56N5P132 | 05/98 |
| 639 | Blair - Collins Cave | Virginia | Scott | 1.534 | 2469 | 0 | 0.0 | VSS | 1977 |
| 640 | Clicks Cave | Indiana | Washington | 1.532 | 2466 | 0 | 0.0 | D.Hibbard | 03/93 |
| 641 | Saltpeter Cave | Missouri | Stone | 1.527 | 2457 | 0 | 0.0 | M.S.S. Map | 02/04 |
| 642 | Bristol Caverns | Tennessee | Sullivan | 1.525 | 2454 | 130 | 39.6 | TCS - Moni | 01/96 |
| 643 | Surgener Cave | Virginia | Lee | 1.525 | 2454 | 0 | 0.0 | VSS | 1987 |
| 644 | Cairn Blowhole (Pit) (2290) | Alabama | Jackson | 1.515 | 2438 | 460 | 140.2 | Georgia Underground V32N4P38 | 09/96 |
| 645 | Hairy Pit / Flowing Spring Cave (847) | Alabama | Jackson | 1.515 | 2438 | 450 | 137.2 | Georgia Underground V32N4P38 | 09/96 |
| 646 | Gourdneck Cave | Tennessee | Marion | 1.515 | 2438 | 400 | 121.9 | TCS | 09/86 |
| 647 | Gin Bluff Cave | Tennessee | Dekalb | 1.515 | 2438 | 100 | 30.5 | TLCL | 09/92 |
| 648 | Apogee Cave | California | Siskiyou | 1.515 | 2438 | 80 | 24.4 | NSS News V57N7P213 | 07/99 |
| 649 | Long Fork Creek Cave | Tennessee | Van Buren | 1.515 | 2438 | 80 | 24.4 | TLCL | 09/92 |
| 650 | Poor Farm Cave | West Virginia | Pocahontas | 1.515 | 2438 | 60 | 18.3 | Tom Wolfe, Canadian Caver #3 | 11/70 |
| 651 | Hidden Hollow Cave | Tennessee | Sumner | 1.515 | 2438 | 50 | 15.2 | TCS | 02/03 |
| 652 | Loopers Cave | Tennessee | Overton | 1.515 | 2438 | 40 | 12.2 | TCS | 09/86 |
| 653 | Canterbury Cave | West Virginia | Monroe | 1.515 | 2438 | 30 | 9.1 | John C. Hempel | 1975 |
| 654 | Lehman Cave | Nevada | White Pine | 1.515 | 2438 | 0 | 0 | R. Bridgemon | 02/66 |
| 655 | Onyx Cave | Missouri | Pulaski | 1.506 | 2424 | 0 | 0.0 | M.S.S. House | 02/04 |
| 656 | Nickajack Cave (Saltpeter) | Tennessee | Marion | 1.496 | 2408 | 111 | 33.8 | TCS - Neff | 07/86 |
| 657 | Earth Mother Cave | West Virginia | Pocahontas | 1.491 | 2400 | 110 | 33.5 | 1995 NSS Convention | 07/95 |
| 658 | Nescatunga Cave (Gypsum) | Oklahoma | Major | 1.490 | 2398 | 0 | 0.0 | R. Breisch | 1969 |
| 659 | Hamer's Cave | Indiana | Lawrence | 1.488 | 2395 | 52 | 15.8 | David Black | 01/96 |
| 660 | Quarry Hill Cave | Pennsylvania | Cumberland | 1.487 | 2393 | 193 | 58.8 | NSS Caves Files - Dick Blenz | 10/5 |
| 661 | Stower's Cave | Texas | Kerr | 1.486 | 2391 | 125 | 38.1 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 662 | Fisher Cave | Missouri | Franklin | 1.483 | 2387 | 0 | 0.0 | M.S.S. Map | 02/04 |
| 663 | Black Pellet Cave (Lava Tube) | Hawaii | Hawaii | 1.478 | 2379 | 206 | 62.8 | Doug Medville e-mail | 04/04 |
| 664 | Bingham Cave (Gypsum) | Oklahoma | Woodward | 1.478 | 2379 | 0 | 0.0 | Keith Harris e-mail (Ok.UG V9 1979) | 07/98 |
| 665 | Dowells Deep Six Cave (517) | Alabama | Morgan | 1.477 | 2377 | 180 | 54.9 | ACS | 04/80 |
| 666 | Three Forks Cave | Oklahoma | Adair | 1.475 | 2374 | 0 | 0.0 | Speleo Digest | 1972 |
| 667 | Lava River Cave (Lava Tube) | Oregon | Deschutes | 1.473 | 2371 | 150 | 45.7 | IUS Comm. on Volcanic Caves news #13 | 06/97 |
| 668 | Premonition Cave | Colorado | Garfield | 1.470 | 2366 | 179 | 54.6 | Rocky Mtn. Caving | SUM06 |
| 669 | Peacock III Cave Syphon (Under Water) | Florida | Suwannee | 1.466 | 2359 | 210 | 64.0 | M.Poucher | 1996 |
| 670 | Eureka Cave | Kentucky | McCreary | 1.466 | 2359 | 0 | 0.0 | John Barnes | 1981 |
| 671 | Post Office Cave (Lava Tube) | California | Siskiyou | 1.465 | 2358 | 0 | 0.0 | Cascade Caver V26P80 | 10/87 |
| 672 | Creeping Cave | Tennessee | Van Buren | 1.461 | 2351 | 165 | 50.3 | Tenn.Cave Survey | 02/03 |
| 673 | Contantine Saltpetre Cave | Kentucky | Hardin | 1.460 | 2350 | 60 | 18.3 | 1998 NSS Convention | 08/98 |
| 674 | Cave Spring Cave | Virginia | Rockbridge | 1.458 | 2346 | 153 | 46.6 | VSS | 1977 |
| 675 | Sand Cave | New Mexico | Eddy | 1.456 | 2343 | 106 | 32.3 | NSS Conv. G.B. | 1986 |
| 676 | Cave City (California) Caverns | California | Calaveras | 1.452 | 2337 | 125 | 38.1 | Peter Bosted | 11/88 |
| 677 | Main Drain Cave | Utah | Cache | 1.450 | 2334 | 1227 | 374.0 | Jon Jasper, Brandon Kowallis, Dave Shurtz | 10/5 |
| 678 | Coffee Cave (Gypsum) | New Mexico | Eddy | 1.442 | 2321 | 11 | 3.4 | Dave Belski e-mail | 03/03 |
| 679 | Watson Bear Cave | Arkansas | Newton | 1.439 | 2316 | 0 | 0.0 | Rodney Tennyson e-mail | 08/00 |
| 680 | Robinson Cave | Kentucky | Warren | 1.436 | 2311 | 0 | 0.0 | Mike Dyas | 09/87 |
| 681 | Chapel Cave (208) | Alabama | Morgan | 1.434 | 2308 | 60 | 18.3 | ACS | 08/87 |
| 682 | Rose Cave | Tennessee | White | 1.432 | 2305 | 78 | 23.8 | Spelo Digest | 12/3 |
| 683 | Eudy Cave (107) (Saltpeter) | Alabama | Marshall | 1.430 | 2301 | 27 | 8.2 | ACS | 04/80 |
| 684 | Rider's Mill (Anne Miller, Pridy) Cave | Kentucky | Hart | 1.429 | 2300 | 0 | 0.0 | LMCK | 01/82 |
| 685 | Wilson - Stanley Cave System | Kentucky | Logan | 1.429 | 2300 | 0 | 0.0 | LMCK | 01/85 |
| 686 | Wind Cave | Missouri | Shannon | 1.428 | 2298 | 0 | 0.0 | M.S.S. House | 02/04 |
| 687 | Lost Sea (Craighead Caverns) (Saltpeter) | Tennessee | Monroe | 1.426 | 2295 | 300 | 91.4 | TCS - Moni | 03/83 |
| 688 | Will Stone Cave | Tennessee | Moore | 1.423 | 2290 | 93 | 28.3 | WWW | 08/97 |
| 689 | Three Forks Cave | Tennessee | Overton | 1.420 | 2285 | 20 | 6.1 | TCS - Moni | 03/83 |
| 690 | Bushwhacker Cave | Missouri | Pulaski | 1.420 | 2285 | 0 | 0.0 | NSS Caves Files - Dick Blenz | 10/5 |
| 691 | James Cave | Virginia | Pulaski | 1.420 | 2285 | 0 | 0.0 | VSS Long Cave List | 02/03 |
| 692 | Cook Pot | West Virginia | Pocahontas | 1.418 | 2282 | 223 | 68.0 | Doug Medville | 03/76 |
| 693 | Wet Cave / Above (Well) Wet Cave | Tennessee | Franklin | 1.414 | 2276 | 401 | 122.2 | Speleonews V34N3 | 06/90 |
| 694 | Arabica-Big Fatty Cave System | Alaska | Heceta Island | 1.412 | 2272 | 519 | 158.2 | Alaskan Caver V19N2P7 , Steve Lewis | 04/99 |
| 695 | Dorsey's Cave | Indiana | Washington | 1.410 | 2269 | 0 | 0.0 | Capers 1988 | 04/90 |
| 696 | Roaring River Cave (1031) | Alabama | Marshall | 1.404 | 2260 | 70 | 21.3 | ACS | 04/80 |
| 697 | Big Spring Cave | Tennessee | Dekalb | 1.400 | 2253 | 67 | 20.4 | TCS | 02/03 |
| 698 | Cushman Blowing Cave | Arkansas | Independence | 1.400 | 2253 | 0 | 0.0 | Little Rock Grotto | 03/04 |
| 699 | Hurricane Cave | Georgia | Dade | 1.399 | 2251 | 265 | 80.8 | Brent Aulenbach e-mail | 11/99 |
| 700 | Anderson's Cave | Kentucky | Warren | 1.398 | 2250 | 0 | 0.0 | LMCK | 04/82 |
| 701 | Pot O' Gold (Lava Tube) | Idaho | Lincoln | 1.396 | 2247 | 0 | 0.0 | R.L.Crawford-Worlds Longest Lava Tubes | 1982 |
| 702 | Wadding Cave | Arkansas | Stone | 1.393 | 2242 | 113 | 34.4 | NSS News V65N3 | 3/7 |
| 703 | Fox Cave | Tennessee | DeKalb | 1.393 | 2242 | 48 | 14.6 | TCS - Gerald Moni | 03/83 |
| 704 | Upper Owl Cave (Lava Tube) | Hawaii | Hawaii | 1.392 | 2240 | 0 | 0.0 | Doug Medville e-mail | 3/9 |
| 705 | Lamplighter's cave | Indiana | Washington | 1.392 | 2240 | 0 | 0.0 | SpGuide 1973 | 04/90 |
| 706 | Jeter River Cave | Tennessee | Montgomery | 1.391 | 2239 | 94 | 28.7 | 2007 NSS Convention | 7/7 |
| 707 | Laneville Water Supply Cave | West Virginia | Randolph | 1.388 | 2234 | 174 | 53.0 | WVASS | 1995 |
| 708 | Birchfield Cave (1458) | Alabama | Jackson | 1.384 | 2227 | 50 | 15.2 | ACS | 6/25 |
| 709 | Shawnee Cave | Indiana | Lawrence | 1.380 | 2221 | 0 | 0.0 | SMP 1/90 | 04/90 |
| 710 | Stewart Spring Cave (871) | Alabama | DeKalb | 1.379 | 2219 | 27 | 8.2 | ACS | 04/80 |
| 711 | Kelly Cave | Virginia | Wise | 1.377 | 2216 | 0 | 0.0 | VSS | 1977 |
| 712 | Glory Cave | California | Santa Cruz | 1.374 | 2211 | 160 | 48.8 | Peter Bosted | 08/95 |
| 713 | Silers Cave | West Virginia | Berkeley | 1.372 | 2208 | 60 | 18.3 | Bob Gulden | 07/85 |
| 714 | Luminary Pit | Tennessee | Bledsoe | 1.371 | 2206 | 535 | 163.1 | Buddy Lane | 07/86 |
| 715 | King Cave | Tennessee | Wayne | 1.371 | 2206 | 40 | 12.2 | Tenn.Cave Survey | 02/03 |
| 716 | Chubby Bunny (Fat Rabbit) Cave (Lava Tube) | Washington | Skamania | 1.370 | 2205 | 162 | 49.4 | Garry Petrie e-mail | 03/03 |
| 717 | Whispering Cave | Alaska | P.E. Island | 1.369 | 2203 | 327 | 99.7 | 1995 NSS Convention | 07/95 |
| 718 | Skaggs Creek Saltpetre (Payne?) Cave | Kentucky | Barren | 1.367 | 2200 | 0 | 0.0 | DUG Scoops | 05/84 |
| 719 | Kaumana Cave (Lava Tube) | Hawaii | Hawaii | 1.365 | 2197 | 0 | 0.0 | William Halliday | 06/96 |
| 720 | Sally Ward Cave (Under Water) | Florida | Wakulla | 1.364 | 2195 | 350 | 106.7 | Caves and Karst of Florida, 2008 NSS Convention | 7/8 |
| 721 | Lineeater (Stevenson Spring) (Under Water) | Florida | Hamilton | 1.364 | 2195 | 60 | 18.3 | Bryant, et.al. | 1982 |
| 722 | Slack's Cave | Kentucky | Scott | 1.361 | 2190 | 0 | 0.0 | LMCK | 01/82 |
| 723 | Johnson's Crook Cave | Georgia | Dade | 1.356 | 2182 | 50 | 15.2 | GSS | 01/79 |
| 724 | Stykes Cave | Kentucky | Pulaski | 1.355 | 2181 | 0 | 0.0 | NSS News V57N10P308 | 10/99 |
| 725 | New Cave (Lava Tube) | Washington | Skamania | 1.354 | 2179 | 137 | 41.8 | Garry Petrie e-mail | 03/03 |
| 726 | Spout Springs Cave | Tennessee | Bedford | 1.353 | 2177 | 135 | 41.1 | TLCL | 09/92 |
| 727 | Starr Chapel Saltpetre Cave | Virginia | Bath | 1.352 | 2176 | 162 | 49.4 | 1998 NSS Convention | 08/98 |
| 728 | Lowes (Fritz Breathing) Cave | Virginia | Washington | 1.351 | 2174 | 0 | 0.0 | VSS | 1977 |
| 729 | Neely's Creek Cave | Kentucky | Pulaski | 1.350 | 2173 | 175 | 53.3 | Bill Walden e-mail | 7/7 |
| 730 | Kneeshredder Cave | Kentucky | Pulaski | 1.349 | 2171 | 0 | 0.0 | NSS 2001 Conventoion Guidebook | 06/01 |
| 731 | Wind Cave | Kentucky | Jackson | 1.348 | 2169 | 0 | 0.0 | LMCK | 01/82 |
| 732 | Rehobeth Church Cave | West Virginia | Monroe | 1.345 | 2165 | 125 | 38.1 | WVASS | 09/91 |
| 733 | Hills Creek - Bruffey Cave System | West Virginia | Pocahontas | 1.340 | 2157 | 83 | 25.3 | WVASS #10 | 09/92 |
| 734 | Watters Cave | West Virginia | Greenbrier | 1.339 | 2155 | 60 | 18.3 | Bill Balfour | 1977 |
| 735 | Sculpin Cave | Kentucky | Mercer | 1.336 | 2150 | 0 | 0.0 | Kentucky Caver | 08/86 |
| 736 | Laurel Creek Cave | Tennessee | Van Buren | 1.333 | 2145 | 56 | 17.1 | Tennessee Long Cave List | 09/92 |
| 737 | Bloomington Cave | Utah | Washington | 1.330 | 2140 | 240 | 73.2 | NSS Caves Files - Dick Blenz | 10/5 |
| 738 | Doodle Cave | West Virginia | Greenbrier | 1.330 | 2140 | 150 | 45.7 | Ron Fulcher e-mail | 01/98 |
| 739 | Stonleys (Divides) Cave | Virginia | Tazewell | 1.330 | 2140 | 0 | 0.0 | VSS Long Cave List | 02/03 |
| 740 | Ranard School Cave | Indiana | Monroe | 1.327 | 2136 | 30 | 9.1 | David Balck | 01/96 |
| 741 | Main Well | Tennessee | Marion | 1.326 | 2134 | 400 | 121.9 | Deep Caves of TAG, John Stembel | 10/01 |
| 742 | Yellow Jacket Pit | Tennessee | Grundy | 1.326 | 2134 | 200 | 61.0 | TCS | 09/86 |
| 743 | Camps Gulf Cave NR2 | Tennessee | VanBuren | 1.326 | 2134 | 73 | 22.3 | TCS | 02/03 |
| 744 | Collins Aqua Cave | Tennessee | Grundy | 1.326 | 2134 | 50 | 15.2 | TLCL | 09/92 |
| 745 | Wonder Cave | Tennessee | Grundy | 1.326 | 2134 | 50 | 15.2 | TCS | 09/86 |
| 746 | Three Falls Complex | New York | Jefferson | 1.326 | 2134 | 25 | 7.6 | Robrt Carroll | 12/78 |
| 747 | Hairy Queen Cave | Tennessee | Putnam | 1.326 | 2134 | 25 | 7.6 | TLCL | 09/92 |
| 748 | Outlaw Cave (Lava Tube) | New Mexico | Eddy | 1.326 | 2134 | 15 | 4.6 | Dave Belski e-mail | 03/03 |
| 749 | Glover Cave (54) | Alabama | Madison | 1.326 | 2134 | 0 | 0.0 | ACS | 04/80 |
| 750 | Tapeats Cave | Arizona | Coconino | 1.326 | 2134 | 0 | 0.0 | Ellis Hedlund | 1971 |
| 751 | Salamander-Crystal-Mederis Cave | Indiana | Monroe | 1.326 | 2134 | 0 | 0.0 | Scott Fee | 04/90 |
| 752 | Mill Run Cave | West Virginia | Tucker | 1.326 | 2134 | 0 | 0.0 | Roger Baroody | 01/71 |
| 753 | Cave of the Falls | Missouri | St.Louis | 1.323 | 2129 | 0 | 0.0 | M.S.S. Marty | 02/04 |
| 754 | Rupert Cave | Pennsylvania | Mifflin | 1.320 | 2124 | 0 | 0.0 | Fall MAR Guild Book P17 | 10/99 |
| 755 | Mitchell Crushed Stone Co. Cave | Indiana | Lawrence | 1.314 | 2115 | 12 | 3.7 | J. Bailey - CIG | 01/91 |
| 756 | McKittrick Cave | New Mexico | Eddy | 1.312 | 2111 | 91 | 27.7 | NSS Conv. G.B. | 1986 |
| 757 | Hell Creek Cave | Arkansas | Stone | 1.307 | 2103 | 0 | 0.0 | W.T.C. OF NSS | 02/90 |
| 758 | Endless Cave | Indiana | Washington | 1.307 | 2103 | 0 | 0.0 | Scott Fee | 04/90 |
| 759 | Fry Creek Cave | Missouri | Wright | 1.306 | 2102 | 0 | 0.0 | M.S.S. Taylor | 02/04 |
| 760 | Kennedy (Nichols) Spring Cave | Kentucky | Trigg | 1.305 | 2100 | 0 | 0.0 | Mike Dyas | 1984 |
| 761 | Graves Cave (1200) | Alabama | Blount | 1.301 | 2094 | 105 | 32.0 | ACS | 04/80 |
| 762 | Mill Cave | Tennessee | Cumberland | 1.300 | 2092 | 178 | 54.3 | TCS | 09/86 |
| 763 | Judy Springs | West Virginia | Pendleton | 1.300 | 2092 | 75 | 22.9 | Gordon Brace e-mail | 9/6 |
| 764 | Ava Cave | Illinois | Jackson | 1.300 | 2092 | 0 | 0.0 | 1997 Speleo Digest | 1998 |
| 765 | Breezeway Cave | Colorado | El Paso | 1.298 | 2089 | 0 | 0.0 | Rocky Mtn Caving P11 | Aut97 |
| 766 | Battered Bar Cave | Virginia | Bath | 1.295 | 2084 | 390 | 118.9 | VSS Long & Deep Cave Lists | 02/03 |
| 767 | Rice Cave | Missouri | Jefferson | 1.293 | 2081 | 0 | 0.0 | M.S.S. Map | 02/04 |
| 768 | Peacock Cave (581) | Alabama | Jackson | 1.292 | 2079 | 50 | 15.2 | GSS | 01/79 |
| 769 | Sequoyah Cave (333) (Saltpeter) | Alabama | DeKalb | 1.292 | 2079 | 27 | 8.2 | ACS | 01/98 |
| 770 | Fantastic Caverns | Missouri | Greene | 1.292 | 2079 | 0 | 0.0 | M.S.S. Taylor | 02/04 |
| 771 | Stolen Well / Davis Cove Cave (1518) | Alabama | Jackson | 1.291 | 2078 | 528 | 160.9 | Georgia Underground V29N3 | 09/92 |
| 772 | Ashmore Spring Cave (1827) | Alabama | Jackson | 1.291 | 2078 | 134 | 40.8 | ACS | 6/25 |
| 773 | June Cave | Indiana | Monroe | 1.287 | 2071 | 0 | 0.0 | IUSC V2#1 C.Roy | 04/90 |
| 774 | Diablo Cave | Texas | Val Verde | 1.284 | 2066 | 13 | 4.0 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 775 | Tongue River Cave(rns) | Wyoming | Sheridan | 1.283 | 2065 | 106 | 32.3 | NSS Caves Files - Dick Blenz | 10/5 |
| 776 | Sinking Foot Cave | Indiana | Harrison | 1.277 | 2055 | 178 | 54.3 | Caprs 90/ICS | 04/90 |
| 777 | Crump's Cave | Kentucky | Warren | 1.276 | 2054 | 93 | 28.3 | Speleo Digest | 1989 |
| 778 | Felton Cave | Texas | Sutton | 1.274 | 2050 | 115 | 35.1 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 779 | Brushy Knob Pit | Kentucky | Hart | 1.273 | 2049 | 302 | 92.0 | David Black | 01/96 |
| 780 | Pukalani Cave (Lava Tube) | Hawaii | Hawaii | 1.273 | 2049 | 0 | 0.0 | William Halliday | 1993 |
| 781 | Stay High Cave | Virginia | Giles | 1.270 | 2044 | 253 | 77.1 | VSS | 08/90 |
| 782 | Marvel Cave | Missouri | Stone | 1.270 | 2044 | 0 | 0.0 | M.S.S. Hoffman | 02/04 |
| 783 | ThunderHole Cave | New York | Schoharie | 1.270 | 2044 | 0 | 0.0 | http://www.manifoldlab.com/thunder/plots-wip/composite.jpg | 3/9 |
| 784 | Spasm Chasm | Tennessee | Marion | 1.269 | 2042 | 450 | 137.2 | Tenn.Cave Survey | 02/03 |
| 785 | Piney Cave | Tennessee | White | 1.269 | 2042 | 240 | 73.2 | TCS | 09/92 |
| 786 | Honeycomb Cave (36) (Saltpeter) | Alabama | Marshall | 1.268 | 2041 | 27 | 8.2 | ACS | 6/25 |
| 787 | McCracken Spring Cave | Kentucky | Meade | 1.268 | 2041 | 0 | 0.0 | LMCK | 01/82 |
| 788 | Hay's Cave (Gypsum) | New Mexico | 1.266 | 2037 | 69 | 21.0 | Dave Belski e-mail | 03/03 | |
| 789 | Jack Daniel Cave | Tennessee | Moore | 1.263 | 2033 | 25 | 7.6 | TCS | 02/03 |
| 790 | Two Owl Cave (Lava Tube) | Hawaii | Hawaii | 1.263 | 2033 | 0 | 0.0 | Doug Medville e-mail | 3/9 |
| 791 | Shiloh Cave | Indiana | Lawrence | 1.263 | 2033 | 0 | 0.0 | Scott Fee | 04/90 |
| 792 | Nielsons Well (Cave) | Utah | Cache | 1.260 | 2028 | 880 | 268.2 | www.caves.org/grotto/timpgrotto/ | 01/03 |
| 793 | Otter Maze Cave | West Virginia | Tucker | 1.259 | 2026 | 20 | 6.1 | WVASS Database | 5/7 |
| 794 | Salmon Cave | West Virginia | Pocahontas | 1.257 | 2023 | 70 | 21.3 | Doug Medville | 03/76 |
| 795 | Herns Mill Cave | West Virginia | Greenbrier | 1.256 | 2021 | 50 | 15.2 | Bill Balfour | 05/87 |
| 796 | Hosterman's Pit | Pennsylvania | Center | 1.256 | 2021 | 0 | 0.0 | J.R. Sweet | 1969 |
| 797 | Owen Spring Cave | Tennessee | Marion | 1.255 | 2020 | 40 | 12.2 | TCS - Moni | 03/83 |
| 798 | Allen Springs Cave | Arizona | Yavapai | 1.250 | 2012 | 0 | 0.0 | W.R. Halliday | 10/68 |
| 799 | Canyon Complex (Marys Hole) Cave | Kentucky | Pulaski | 1.250 | 2012 | 0 | 0.0 | NSS News V57N10P308 | 10/99 |
| 800 | Jewel Cave | West Virginia | Greenbrier | 1.250 | 2012 | 0 | 0.0 | Bill Balfour | 05/87 |
| 801 | Cave Cove Spring Cave | Tennessee | Franklin | 1.249 | 2010 | 180 | 54.9 | TCS - Gerald Moni | 03/83 |
| 802 | Wizard's Well Cavern | Texas | Terrell | 1.247 | 2007 | 388 | 118.3 | Texas Speleological Survey via Jerry Atkinson e-mail | 8/4 |
| 803 | Rimstone Cave | Kentucky | Breckenridge | 1.243 | 2000 | 0 | 0.0 | LMCK | 01/82 |
| 804 | Bradys Bend Cave | Pennsylvania | Armstrong | 1.243 | 2000 | 0 | 0.0 | NGN V33N4P9 | 1969 |
| 805 | Kelly Hollow Cave | Missouri | Oregon | 1.239 | 1994 | 0 | 0.0 | M.S.S. House | 02/04 |
| 806 | Fort-Pebbles Cave | Tennessee | Franklin | 1.234 | 1986 | 401 | 122.2 | Tenn.Cave Survey | 02/03 |
| 807 | Vandevander Cave | Virginia | Highland | 1.234 | 1986 | 55 | 16.8 | Highland Co. Survey | 12/00 |
| 808 | Round Spring Cavern | Missouri | Shannon | 1.233 | 1984 | 0 | 0.0 | M.S.S. Sutton | -2/04 |
| 809 | Alabama/Georgia Cave (3647) | Alabama | Dekalb | 1.231 | 1981 | 204 | 62.2 | Brent Aulenbach e-mail | 06/01 |
| 810 | Davis Tire Cave | Tennessee | Van Buren | 1.231 | 1981 | 100 | 30.5 | TCS - Moni | 03/83 |
| 811 | Bakers Cave | Tennessee | Robertson | 1.231 | 1981 | 50 | 15.2 | TLCL | 09/92 |
| 812 | King Cave | Tennessee | Warren | 1.231 | 1981 | 40 | 12.2 | TCS | 02/03 |
| 813 | Bubble Butt Cave | West Virginia | Randolph | 1.231 | 1981 | 20 | 6.1 | Doug Medville e-mail | 12/00 |
| 814 | The Catacombs | Florida | Marion | 1.230 | 1979 | 0 | 0.0 | Caves and Karst of Florida, 2008 NSS Convention | 7/8 |
| 815 | Windy River Cave (1349) | Alabama | Jackson | 1.226 | 1973 | 16 | 4.9 | ACS | 04/80 |
| 816 | Ten Mile Creek Pit | Tennessee | Knox | 1.222 | 1967 | 76 | 23.2 | TCS - Neff | 07/86 |
| 817 | Ivy Hollow Cave (8) (Saltpeter) | Alabama | Lawrence | 1.221 | 1965 | 0 | 0.0 | ACS | 04/80 |
| 818 | Hupmans Saltpeter Cave | Virginia | Highland | 1.220 | 1963 | 200 | 61.0 | VSS Long & Deep Cave Lists | 02/03 |
| 819 | Thunder Run Cave | Tennessee | VanBuren | 1.220 | 1963 | 150 | 45.7 | Tenn.Cave Survey | 02/03 |
| 820 | Hubbard's Cave | Colorado | Garfield | 1.220 | 1963 | 0 | 0.0 | Richard Rhinehart e-mail | 09/99 |
| 821 | Eller Cave | Indiana | Monroe | 1.220 | 1963 | 0 | 0.0 | NSS Conv. 1973 | 04/90 |
| 822 | Minnetonka Cave | Idaho | Bear Lake | 1.217 | 1959 | 323 | 98.5 | Scott Earl, Idaho Cave Survey | 08/98 |
| 823 | Whippoorwill Cave | Arkansas | Madison | 1.215 | 1955 | 68 | 20.7 | Rodney Tennyson e-mail | 08/00 |
| 824 | Fox Cave | West Virginia | Greenbrier | 1.212 | 1951 | 153 | 46.6 | WVASS Database | 5/7 |
| 825 | John Eddings Cave | Arkansas | Newton | 1.212 | 1951 | 0 | 0.0 | Chuck Bitting e-mail | 9/4 |
| 826 | Catwalk Cave-Gaping Holes System (lava Tube) | California | Siskiyou | 1.212 | 1951 | 0 | 0.0 | J.Broeckel e-mail | 09/98 |
| 827 | Schoolhouse | West Virginia | Pendleton | 1.210 | 1947 | 439 | 133.8 | Gordon Brace e-mail | 10/5 |
| 828 | Dwarf Mine Cave | Indiana | Lawrence | 1.210 | 1947 | 0 | 0.0 | CIG 1962 | 04/90 |
| 829 | Snow Hill Cave | Tennessee | Dekalb | 1.207 | 1942 | 67 | 20.4 | TCS | 02/03 |
| 830 | Bloody Elbow Cave | Alabama | Madison | 1.202 | 1934 | 558 | 170.1 | Julie Schenck Brown | 5/6 |
| 831 | Carol's Crack | West Virginia | Hardy | 1.201 | 1933 | 84 | 25.6 | Ed Devine | 01/96 |
| 832 | McKinney Pit Cave (629) | Alabama | Colbert | 1.198 | 1928 | 60 | 18.3 | ACS | 6/25 |
| 833 | Saltpeter Cave | West Virginia | Pendleton | 1.197 | 1926 | 149 | 45.4 | George Dasher | 07/97 |
| 834 | Clubhouse Cave | Missouri | Webster | 1.197 | 1926 | 0 | 0.0 | M.S.S. Beard | 02/04 |
| 835 | Redmad Cave | Indiana | Washington | 1.194 | 1922 | 34 | 10.4 | 2005 NSS Convention | 6/5 |
| 836 | Sculpture Cave (Gypsum) | Oklahoma | Major | 1.194 | 1922 | 0 | 0.0 | Speleo Digest | 1972 |
| 837 | Ruskin Cave | Tennessee | Dickson | 1.181 | 1901 | 97 | 29.6 | Tenn.Cave Survey | 02/03 |
| 838 | Slagel Cave | Kentucky | Wayne | 1.181 | 1901 | 0 | 0.0 | LMCK | 01/82 |
| 839 | Pig Hole | Virginia | Giles | 1.180 | 1899 | 428 | 130.5 | VSS | 02/89 |
| 840 | Blue River Cave (177) (Saltpeter) | Alabama | Jackson | 1.180 | 1899 | 60 | 18.3 | ACS | 04/80 |
| 841 | Whiteside Cave | Tennessee | Marion | 1.179 | 1897 | 25 | 7.6 | Tenn.Cave Survey | 02/03 |
| 842 | Bunkum Cave | Tennessee | Pickett | 1.177 | 1894 | 41 | 12.5 | Tenn.Cave Survey | 02/03 |
| 843 | Foushre (little Blowing) Cave | Arkansas | Independence | 1.174 | 1889 | 0 | 0.0 | D.P. Goodwin, AACS | 02/80 |
| 844 | Arlicomi (Resurrection) Cave | Arkansas | Izard | 1.174 | 1889 | 0 | 0.0 | D.P. Goodwin, AACS | 02/80 |
| 845 | Wildcat Cavern | Virginia | Wise | 1.173 | 1888 | 56 | 17.1 | VSS | 1987 |
| 846 | Cutlip Cave | West Virginia | Pocahontas | 1.172 | 1886 | 80 | 24.4 | WVASS #10 | 08/92 |
| 847 | Clyde Cochran Cave | West Virginia | Pocahontas | 1.169 | 1881 | 124 | 37.8 | WVASS #10 | 08/92 |
| 848 | Hortons Mill Cave (1387) | Alabama | Blount | 1.169 | 1881 | 0 | 0.0 | ACS | 6/25 |
| 849 | Church Cave | Kentucky | Pulaski | 1.167 | 1878 | 0 | 0.0 | NSS News V57N10P308 | 10/99 |
| 850 | Alabaster Caverns (Gypsum) | Oklahoma | Woodward | 1.164 | 1873 | 0 | 0.0 | Ok. Underground | 1986 |
| 851 | Crooked Creek Ice Cave | Kentucky | Rockcastle | 1.162 | 1870 | 0 | 0.0 | LMCK | 01/82 |
| 852 | Bear-Hanna Cave (2100) | Alabama | Jackson | 1.161 | 1868 | 488 | |||
